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Python Django And Flask | What Is Django?

Django VS Flask - Which Should You Learn

Advantages of Flask

Here, are pros/benefits of using Flask

  • Higher compatibility with latest technologies
  • Technical experimentation
  • Easier to use for simple cases
  • Codebase size is relatively smaller
  • High scalability for simple applications,
  • Easy to build a quick prototype
  • Routing URL is easy
  • Easy to develop and maintain applications
  • Database integration is easy
  • Small core and easily extensible
  • Minimal yet powerful platform
  • Lots of resources available online especially on GitHub

Pros and Cons of Using Flask

Although Flask has a ton of functionality and is well-known for being easy to use, it has a few shortcomings worth mentioning. The benefits and drawbacks of using Flask are listed below.

Advantages

  • Flexible with full control access
  • Great for smaller projects
  • Scalable
  • Easy to integrate databases
  • Adjustable to new tech
  • Easy and fast to build prototypes
  • Extensible
  • Small codebase with simple functions
  • Easy URL routing through Werkzueg
  • Allows architecture and library experimentation

Drawbacks

  • No support for multi-page apps
  • Lack of security features
  • No built-in admin site
  • Difficult maintenance
  • No object-relational mapping without extensions
Django VS Flask - Which Should You Learn
Django VS Flask – Which Should You Learn

Templating system: Django templates vs Jinja2 templates

If we only had to work with static HTML pages, that would be very easy, but most of today’s web applications include dynamic content. This is why we need a templating system.

Django has a built-in template engine, while Flask is fully compatible with Jinja2 templates.

Jinja2 was influenced by the Django template language. That’s why their syntax looks pretty similar. For example, both use double curly braces (

{{ }}

) for variables and curly braces with percent signs (

{% %}

) for logical elements, like loops and conditional statements.

At the same time, there are significant differences. Let’s look at these in more detail.

Compatibility

Django templates are tightly integrated with the Django framework. Some of their features, like template inheritance and template tags, are Django-specific.

Jinja2 is an independent template engine, compatible with various frameworks, including Django and Flask. That’s right: Although Django templates are the default choice for Django apps, you can use Jinja2 with Django, too! However, only 14% of Django developers do so, according to the Django Developers Survey 2022:

PyCharm has time-saving features for both template engines. For example, you can use gutter icons to navigate from templates to views, and vice versa – all in one click.

Flexibility and complexity

Jinja2 has a more complex syntax, while Django templates are less flexible and more restricted. There’s hardly any difference for basic applications, but you may face some limitations if you need to perform advanced operations in your templates.

For example, Jinja2 lets you define macros, which are reusable blocks of code:

{% macro greeting(name) %} Hello, {{ name }}! {% endmacro %} {{ greeting(“Alice”) }} {{ greeting(“Bob”) }}

Other examples of more flexible syntax in Jinja2 include:

  • Mathematical operations.
  • Built-in filters for string formatting and manipulation.
  • The ability to assign variables.

The functionality of Django templates has been intentionally restricted, but for good reasons, including:

  • Separating application logic from representation.
  • Security: Prohibiting arbitrary code execution in templates helps to prevent injection attacks.
  • Keeping templates accessible for non-programmers, such as designers.

Both template engines allow you to create custom tags and filters. If you’re using PyCharm, you can benefit from its support for custom template tags.

Extensions and customizations

Many limitations in Django templates can be compensated by using additional libraries. However, it’s important to remember that any extra dependency may negatively affect your application’s performance and security. Here are some popular extensions for Django templates:

  1. django-crispy-forms: introduces the

    |crispy

    filter and the

    {% crispy %}

    tag to let you format Django forms easily and beautifully.
  2. django-widget-tweaks: adds the

    {% render_field %}

    tag for customizing form fields by using an HTML-like syntax and a bunch of template filters for tweaking form fields and CSS classes.
  3. django-ckeditor: provides a WYSIWYG rich text editor so that your application’s users can add their own content as formatted text.

In Jinja2, you can also import extensions for the sake of customization or even more sophisticated logic. For example, Loop Controls adds support for

break

and

continue

in loops. The following loop will stop after processing 10 users from the

users

list:

{% for user in users %} {%- if loop.index >= 10 %}{% break %}{% endif %} {%- endfor %}

The Debug Extension lets you use the

{% debug %}

tag in Jinja2 templates to explore the context without setting up a debugger.

By the way, PyCharm lets you debug Django templates without any extra tags. Another great feature is the real-time preview of Django templates. The IDE renders templates as you edit them, so that you don’t need to switch to your browser.

Features of Django

Here are important features of Django:

  • Offers Model – View – Controller (MVC) Architecture.
  • Predefined libraries for imaging, graphics, scientific calculations, etc.
  • Supports for multiple databases.
  • Cross-platform operating system.
  • Site optimization across specialized servers
  • Support for front-end tools like Ajax, jQuery, Pyjamas, etc.
  • Supports multi-Language and multi-characters.
I built the same app 3 times | Which Python Framework is best? Django vs Flask vs FastAPI
I built the same app 3 times | Which Python Framework is best? Django vs Flask vs FastAPI

What is Flask Python?

Flask may be a generally youthful framework, as it were in utilization since 2010. Flask is considered more “Pythonic” than Django is basically since Flask web application code is, in most cases, more unequivocal. Flask is the choice of most tenderfoots due to the need for barricades to get a basic app up and running.

Here are a few Flask use cases

Flask is extraordinary for building basic locales with inactive substance, like blogs; it gives all the usefulness you would like and permits customization to a tremendous degree.

A Brief Python Overview

Here is how the Python Software Foundation, the organization behind Python, sums up the language: “…an interpreted, object-oriented, high-level programming language with dynamic semantics. Its high-level built-in data structures, combined with dynamic typing and dynamic binding, make it very attractive for Rapid Application Development, as well as for use as a scripting or glue language to connect existing components together.”

Python was the second most popular programming language by the conclusion of 2020, taking Java’s place but still lagging behind C. Python appeals to beginning and veteran programmers, as well as non-programmers. Python is the language preferred by many data scientists, web developers, and software programmers, thanks to its easy-to-use syntax and versatility as a general-purpose programming language.

Flask vs Django in 2024 - Make a RIGHT Choice (Difference Explained)
Flask vs Django in 2024 – Make a RIGHT Choice (Difference Explained)

Which is better, Python Flask or Django?

Maybe you’ve just finished a Python course, or perhaps you want to flex your programming muscles with some web development, but you’re still wondering: Django or Flask, which is better?

There’s no clear answer here, as you’re free to use either Flask or Django with your favorite web development IDE to build your next web app, but it can help to know the best types of projects and scenarios suited to these two Python frameworks.

You should use Django when you need to:

  • Work on large projects (multi-page) with strict deadlines
  • Use built-in features and gain access support to speed up development
  • Build secure projects that require authorization
  • Have the option to scale up or make projects more complex in the future
  • Create web applications with native ORM support or API backends

You should use Flask when you need to:

  • Work on smaller projects (single-page)
  • Have varied database support, including NoSQL
  • Have flexibility and freedom to choose libraries and extensions
  • Have API support or want to add new extensions in the future
  • Create static websites, rapid prototypes, and RESTful web services

When thinking about Django versus Flask, it helps to consider whether you’re brand new to Python or web frameworks. In either case, you may find it easier to start with Flask than Django, which has a steeper learning curve and a more rigid approach to creating web applications.

That said, you can use Django books and other resources to overcome this learning curve.

If you plan to build complex apps in the future, it’s well worth learning Django with the wide range of online resources available to you. And if you opt for Django, you can rely on an active community of Django developers who are ready to help if you find yourself in a jam.

This is particularly obvious when you consider that Django is tagged in more than 300k questions on StackOverflow, compared to approximately 55k for Flask.

Despite this differential, both frameworks have trended upwards in StackOverflow questions over the last 10 years, demonstrating growing popularity among web developers.

Django & Flask Have Trended Upwards In Mentions: Stack Overflow

Are you weighing options for your new website or application and trying to choose between Flask and Django?

Flask and Django are two extremely powerful and popular Python frameworks, but even professional web developers may struggle to determine which one is best for their specific requirements.

This Flask-vs-Django comparison guide will help you decide by examining the core differences between the two.

Community

Cộng đồng sử dụng và hỗ trợ Django là không lồ, lớn hơn Flask và Pyramid rất nhiều. Tất nhiên, bạn có thể dễ dàng tìm được sự hỗ trợ về kỹ thuật với Flask và Pyramid. Với hơn 20k stars on Github, 130k question trên Stackoverflow, …. thì Django thực sự là cái tên lớn nhất về web framework của Python. Nhỏ hơn với 20k stars on Github và 30k questions on Stackoverflow là của Pyramid. Sinh sau đẻ muộn nhất là Flask, với 2k starts on Github và 7k questions on Stackoverflow.

Django vs. Flask - Best Backend Frameworks for 2021
Django vs. Flask – Best Backend Frameworks for 2021

Features of Flask

Here are important features of Flask

  • Integrated support for unit testing.
  • RESTful request dispatching.
  • Uses a Jinja2 template engine.
  • It is based on Werkzeug toolkit.
  • Support for secure cookies (client-side sessions).
  • Extensive documentation.
  • Google app engine compatibility.
  • APIs are nicely shaped and coherent
  • Easily deployable in production

Introduction

Django được thiết kể để nhà phát triển có thể phát triển ứng dụng web của mình một cách nhanh chóng và sạch sẽ. Django cung cấp đủ features cho phát triển ứng dụng web như template, form, routing, authentication, basic database administration, and more …Vì vậy, Django là sự lựa chọn tốt cho những ai đã biết Python trước đó và muốn phát triển ứng dụng một cách nhanh chóng nhất.

Flask là microframework nhỏ và nhẹ, phù hợp cho người mới bắt đầu. Nó rất

easy to learn

. Bạn có thể build một simple web chỉ với 7 lines code.

Pyramid khó tiếp cận hơn Django và Flask. Cũng có lẽ vì lý do đó, Pyramid khá ít người sử dụng. Pyramid hỗ trợ routing và verification, tuy nhiên templating và data source administration require external collections.

Django vs. Flask – Watch this 5-minute comparison to make your decision!
Django vs. Flask – Watch this 5-minute comparison to make your decision!

Wrapping Up: Flask vs Django

So there you have it, a comprehensive head-to-head of Flask vs Django for 2024.

If you’re interested in web development and know Python, you’ve likely pondered the question of Flask vs Django for your next project. To help you choose, this article has focused on Flask vs Django in terms of key features, pros and cons, and best use cases.

If you’re still unsure, remember this. Django is a full-stack web framework with a ‘batteries included’ approach that’s excellent for large projects that require security and scalability. If you value flexibility, Flask is ideal as it’s a lightweight and extensible micro-framework that’s great for smaller projects.

There’s no doubt that the Flask vs Django comparisons are unlikely to stop, but whichever you choose, have fun with your next web development project!

Are you new to Python and trying to find the best way to learn? Check out:

The Hackr.io Python Masterclass – Python with Dr. Johns

Conclusion

So, which framework should you use? As always, it depends. The choice to go with one framework or language or tool over another depends almost entirely on the context and problem at hand.

Django is full-featured so it requires fewer decisions to be made by you or your team. You can probably move faster that way. However, if you disagree with one of the choices that Django makes for you or you have unique application requirements that limit the number of features you can take advantage of, you may want to look to Flask.

There’s always going to be tradeoffs and compromises.

Think about project constraints, like time, knowledge, and budget. What are some of your app’s key features? What can you not compromise on? Do you need to move quickly? Does your app require a great deal of flexibility? Try to put your opinions aside as you answer these questions.

In the end, both frameworks have lowered the barrier to entry for building web applications, making them much easier and quicker to develop.

I hope this has been helpful. For more, check out these two excellent resources:

Choosing the Right Python Web Framework: Django, Flask, or FastAPI?
Choosing the Right Python Web Framework: Django, Flask, or FastAPI?

Why Frameworks Matter

Inevitably, you will encounter many tedious and repetitive tasks when working on Python projects like building a web application. These tasks include building back-end logic, designing a user interface, and hooking the app up to the internet so it interacts with a browser better. Web frameworks are designed to implement the functionalities commonly found in web applications, such as mapping URLs to Python code pieces.

But each framework offers different benefits. Let’s explore Flask vs Django.

What Is Django?

Dubbed a “framework for fussbudgets with deadlines,” Django is a free, open-source web framework first released in 2005 by Adrian Holovaty and Simon Willison.

Django is a sophisticated Python-based framework with full-stack development configurations such as template layouts, request and troubleshooting, cookies, form validation, unit tests, table settings, and other functionality devs use to create dynamic web applications.

Django follows a Model-View-Template (MVT) architectural pattern that helps developers perform routine or complex tasks efficiently with little intervention from protocols, management, and systems when building high-intensity applications and database-driven websites.

Low coupling, pluggability, reusability, and simple code are some of Django’s core tenets. It’s no surprise that global companies such as Instagram, National Geographic, Spotify, Mozilla, Quora, and Discovery Channel use Django for their development projects.

Python Backend Web Development Course (with Django)
Python Backend Web Development Course (with Django)

What Is Flask?

Flask is another Python-based microframework for developing web applications. Armin Ronacher introduced it in 2011 as a test method for combining two solutions: Werkzeug (a server framework) and Jinja2 (a template library).

It was supposed to be a test run in a zip file that eventually stems from Flask’s positive influence.

Because it does not rely on external libraries to perform framework tasks, Flask is classified as a micro framework. It has its own set of tools, technologies, and libraries to help with web application development.

Many developers prefer to start with Flask because it is more independent and flexible.

Flask vs Django: Summing it Up

So, what does it mean for you in this Flask vs Django comparison? To help you make a decision, this table sums it all up.

Flask Django
Cost-effectiveness Free open-source, will cost more for maintenance and security. Free open-source, suitable for low-budget projects.
Development Time The development process takes a longer time than Django. Excellent for quick development and projects with tight deadlines.
Ease of Use/Learning Easy to learn and straightforward. Best for beginners. More complex and requires advanced knowledge of Python. Best for advanced users.
Employment Opportunities In demand with slightly higher average salaries than Django. More popular than Flask. In demand with slightly lower average salaries than Flask.
Features Flask relies mostly on third-party extensions for additional functionality. Django comes with a wide range of built-in features.
Performance Flask is lightweight and simpler, allowing it to build projects in a shorter time and with less coding. More suitable for building larger projects rapidly and effortlessly.
Scalability Limited scalability. Ideal for small projects. High scalability. Recommended for large, complex projects.
Security Short codebase making it more secure to threats, but limited in integrated security features. Long codebase, making it more prone to mistakes and attacks, but includes numerous security features by default.
Speed Lightweight, more flexible and faster than Django. Full-stack solution. Less flexible than Flask.
Python Microservices Web App (with React, Django, Flask) - Full Course
Python Microservices Web App (with React, Django, Flask) – Full Course

What Is Flask?

Flask is a micro-framework that doesn’t require external libraries to implement its functionalities. It was developed in 2011 by Armin Ronacher, who came up with it while developing a solution that combined Werkzeug (a server framework) and Jinja2 (a template library).

Flask comes with plenty of tools, technologies, and libraries required for web application development. Flask offers form validation and other extensions for object-relational mapping, open authentication, file uploading, and others.

Some of the well-known companies that have employed Flask include Samsung, Netflix, Lyft, Reddit, and Zillow.

Open Source

Django and Flask have strong open source communities.

GitHub stats as of January 10th, 2024:

Metric Django Flask
First commit 2005 2010
Contributors 2,497 713
Users* 1,516,997 1,642,229
Watchers 2,294 2,138
Stars 74,941 65,412

*number of times the dependency is used by other repositories

For more, review Open Hub’s Open source comparison of Django and Flask.

Stack Overflow questions as of January 10th, 2024:

What can we conclude here?

  1. Both communities are very active
  2. Django is older and has a lot more contributors
  3. Flask is used by more projects
  4. There’s more content out there on Django

To really compare these frameworks (or ecosystems) from an open source perspective, you’d have to account for Jinja2 and Werkzeug along with some of the core Flask libraries and extensions like SQLAlchemy / Flask-SQLAlchemy, Alembic / Flask-Alembic, and WTForms / Flask-WTF.

Since the core Flask functionality is spread out across multiple projects it’s harder for the community to create and develop the necessary synergy across projects to sustain momentum. For example, Flask doesn’t have a single, de-facto extension for creating RESTful APIs; there are (arguably) four popular extensions as of January 2024:

What’s more, in order to find these extensions you need to have some pretty solid information retrieval skills. You’ll have to filter through all the un-maintained extensions out there and articles that reference them. In fact, there are so many different extension projects for RESTful APIs that it’s often easier to just roll your own and open source it. At that point, you’ll probably maintain it for a bit but eventually it will become part of the problem rather than a solution.

Notes:

  1. This is not a knock against the Flask community. It’s an issue in open source as a whole, especially with micro web frameworks where you often have to cobble together a number of projects maintained by different developers on different release cycles with varying levels of documentation quality. Head on over to the JavaScript community if you want to see this to the extreme.
  2. The Django community is not immune to this by any means. It’s just less of an issue since it handles almost everything required to build and secure a standard web app out-of-the-box.

For more on this review the “Open source momentum” section from Django vs Flask: A Practictioner’s Perspective:

By not having a united front, the opportunity for synergetic efforts that bridge across extensions fail to materialize, creating extensions that are porous. This leaves devs to fill in the blanks for all-inclusive functionality that’d already be working had they just picked a different tool for the job.

من دولار ل مليون!!.. كيف تحمي أموالك من التضخم وتستثمرها بنجاح؟
من دولار ل مليون!!.. كيف تحمي أموالك من التضخم وتستثمرها بنجاح؟

What is a Framework?

The framework is a set of modules that aid developers in writing web application code. It’s a fully functional package that makes web development easier, faster, scalable, and dependable.

Frameworks written in the Python programming language include Django and Flask. According to the Developers Survey 2018, these python-based frameworks are one of the most popular frameworks for web development.

Flask Vs Django: Which Python Framework to Choose?

  • You should prefers flask if you want the granular level of control while a Django developer relies on an extensive community to create unique website.
  • Django combined with the REST Framework helps you to build powerful APIs, whereas Flask requires more work, so there are high chances to make a mistake.
  • The best method is to build a few basic CRUD apps with both frameworks and decide which framework fits your project style better.

According to the 2022 JetBrains Python Developers Survey, Django and Flask are by far the two most popular Python web frameworks. While Django has traditionally been the most popular Python web framework, Flask moved past Django to take the top spot a few years ago, which is no surprise considering that the web development industry has been trending toward smaller frameworks, microservices, and “serverless” platforms over the past eight or so years.

Or perhaps this has less to do with industry trends and more to do with JetBrains users?

Django and Flask have mature communities, are widely supported and popular, and offer productive approaches to application development, letting you focus your time and energy on the unique parts of your application rather than the core scaffolding. In the end, both frameworks are used to develop web applications. The key difference lies in how they achieve this goal. Think of Django as a car and Flask as a bike. Both can get you from point A to point B, but their approaches are quite different. Each has its own best use cases. The same goes for Django and Flask.

In this article, we’ll look at the best use cases for Django and Flask along with what makes them unique, from an educational and development standpoint.

Build a Social Media App with Django – Python Web Framework Tutorial
Build a Social Media App with Django – Python Web Framework Tutorial

Use Cases

Be sure to take your project’s individual needs into account when you’re deciding on a framework. Since Django provides a lot of bells and whistles, you should take advantage of them. If you have strong disagreements with how Django handles something you may want to go with Flask. The same can be said if you won’t be taking advantage of the structure and tools that Django provides.

Let’s look at some examples.

Database

If you’re application uses SQLite, PostgreSQL, MySQL, MariaDB, or Oracle, you should take a hard look at Django. On the other hand, if you’re using NoSQL or no database at all, then Flask is a solid choice.

Project Size and Anticipated Lifetime

Flask is better for smaller, less-complicated projects that have well-defined scopes and shorter anticipated lifetimes.

Since Django forces a consistent app structure regardless of the size of the project nearly all Django projects have a similar structure. Because of thus, Django better handles larger projects (with larger teams) that have longer lifetimes and potential for a lot of growth since you’ll most likely have to onboard new developers from time to time.

Application Type

What kind of application are you building?

Django excels at creating full-featured web applications with server-side templating. If you’re just developing a static web site or RESTful web service that feeds your SPA or mobile application, Flask is a solid choice. Django coupled with Django REST Framework works well in the latter case too.

RESTful APIs

Designing a RESTful API?

Django REST Framework (DRF), one of the most popular third-party Django packages, is a framework used to expose Django models through a RESTful interface. It comes with everything you need (views, serializers, validation, auth) and more (browsable API, versioning, caching) for building APIs quickly and easily. That said, again, keep in mind that like the Django ORM it’s intended to be coupled with a relational database.

Flask has a number of great extensions as well:

Use Extensions
Views Flask-RESTful, Flask-Classful, Flask-RESTX
Serialization Flask-Marshmallow
Auth Flask-JWT, Flask-JWT-Extended

Be sure to check out Connexion as well, which combines the view, serialization, and auth functionality into a single package!

Review this Stack Exchange answer for a number of other requirements you may want to take into account when choosing a framework.

Overview

Even if you are new to web development, you probably already know that there are two main web frameworks in the Python world: Django and Flask. According to the Python Developers Survey 2022 conducted by JetBrains, 39% of developers reported using either or both.

Whether you are a beginner thinking of what to learn to get your first job in web development, a developer looking for a framework to build a web application on, or a team lead considering various technologies for an upcoming project, this article should help you make the right choice.

Before diving deep, let’s take a look at the basic principles and “philosophies” of Django and Flask:

  • Flask is a microframework, while Django is an “all-inclusive” one. This means that you have more flexibility in choosing the tools you want to use in Flask, whereas Django has more essential features available out of the box.
  • Django enforces certain requirements on the project layout, but for a good cause, as this encourages developers to create applications with a clean and pragmatic design. Flask provides more freedom, though this may result in longer onboarding times for new team members.
  • Flask and Django are both free and open source.
  • Both frameworks have a large community, detailed documentation, and receive regular updates.

Now that we’ve covered the essentials, let’s compare Flask vs Django by looking at the various aspects and challenges of using each framework for web development.

What is Django?
What is Django?

Education

Learn patterns, not languages or frameworks.

Regardless of whether your end goal is to learn Flask or Django, start with Flask. It’s a great tool for learning web development fundamentals and best practices along with the core pieces of a web framework that are common to almost all frameworks.

  1. Flask is lighter and much more explicit than Django. So, if you’re new to web development but not to Python, you’ll find it much easier to develop in Flask since it will feel much like you’re working with vanilla Python to define request handlers and views and what not.
  2. Django has a lot of overhead. From the project structure to the settings to installing a number of nuts and bolts that you don’t know anything about, you’ll get lost and end up learning more about Django itself than the actual fundamentals.

In almost all cases, it’s recommended to learn Flask before Django. The only time you should deviate from that is when you just need to get an app up quick to satisfy some external stakeholder. Just be sure to work your way back to Flask to learn the basics at some point.

Dispatch by Path¶

Dispatching by a path on the URL is very similar. Instead of looking at
the

Host

header to figure out the subdomain one simply looks at the
request path up to the first slash.

from threading import Lock from wsgiref.util import shift_path_info class PathDispatcher: def __init__(self, default_app, create_app): self.default_app = default_app self.create_app = create_app self.lock = Lock() self.instances = {} def get_application(self, prefix): with self.lock: app = self.instances.get(prefix) if app is None: app = self.create_app(prefix) if app is not None: self.instances[prefix] = app return app def __call__(self, environ, start_response): app = self.get_application(_peek_path_info(environ)) if app is not None: shift_path_info(environ) else: app = self.default_app return app(environ, start_response) def _peek_path_info(environ): segments = environ.get(“PATH_INFO”, “”).lstrip(“/”).split(“/”, 1) if segments: return segments[0] return None

The big difference between this and the subdomain one is that this one
falls back to another application if the creator function returns

None

.

from myapplication import create_app, default_app, get_user_for_prefix def make_app(prefix): user = get_user_for_prefix(prefix) if user is not None: return create_app(user) application = PathDispatcher(default_app, make_app)

In the world of web development, the choice of framework can significantly impact the success of a project. When it comes to building an API, developers are often faced with a critical decision: which framework to use? Django, Flask, and FastAPI are three popular choices, each with its own strengths and characteristics. In this article, we will explore the factors to consider when making this decision and provide insights into when to choose Django, Flask, or FastAPI for your API development.

Understanding the Frameworks

Before diving into the comparison, let’s briefly introduce each framework:

  1. Django: The Full-Stack Powerhouse- Django is a high-level, full-stack web framework that offers a comprehensive set of features for building web applications, including APIs.- It comes with built-in components such as an ORM (Object-Relational Mapping), an admin interface, and authentication.- Django emphasizes “batteries-included” development, making it an excellent choice for projects requiring a wide range of features.
  2. Flask: The Microframework for Flexibility- Flask is a microframework that provides the essentials for web application development, leaving the rest up to you.- It offers a minimalistic approach, allowing developers to choose their preferred tools and libraries for specific tasks.- Flask is lightweight, easy to get started with, and offers great flexibility.
  3. FastAPI: The Modern, Performant Choice- FastAPI is a relatively new web framework designed explicitly for building APIs.- It boasts remarkable performance, thanks to its asynchronous capabilities and automatic data validation using Python type hints.- One of its standout features is automatic OpenAPI/Swagger documentation generation.

When deciding which framework to use for your API project, several key factors should guide your choice:

  1. Project Complexity:Consider the complexity of your project. Django is well-suited for large, feature-rich applications, while Flask and FastAPI are more lightweight and suitable for smaller to medium-sized projects.
  2. Built-in Features:If you need built-in components like user authentication, an admin panel, and an ORM, Django has you covered. Flask and FastAPI provide these features through extensions and libraries that you can choose to integrate.
  3. Flexibility vs. Convention:Flask offers maximum flexibility, allowing you to assemble your stack of choice. Django, on the other hand, follows a convention-over-configuration approach, which can save development time but may limit flexibility.
  4. Performance Requirements:If high performance is a top priority, FastAPI’s asynchronous capabilities and type hint-based data validation make it an attractive option.
  5. Documentation and Community:Consider the availability of documentation and community support. Django has a well-established community, while FastAPI is gaining traction rapidly.
  6. Development Team Expertise:Your team’s familiarity with a particular framework can significantly impact development speed and maintainability. Choose a framework that aligns with your team’s expertise.
  • You’re building a full-featured web application with user authentication, an admin panel, and a database.
  • You prefer convention over configuration and value a framework with built-in features.
  • Your project requires a robust, mature ecosystem and community support.
  • You want maximum flexibility to choose your tools and libraries.
  • Your project is small to medium-sized and doesn’t require a full-stack framework.
  • You prefer a minimalistic framework that lets you build components from scratch.
  • High-performance is a top priority, and you need asynchronous capabilities.
  • You want automatic API documentation generation with OpenAPI/Swagger.
  • Data validation and serialization using Python type hints are crucial for your project.

Choosing the right framework for building an API is a critical decision that should align with your project’s requirements and your development team’s expertise. Django, Flask, and FastAPI each offer unique advantages, from full-stack convenience to maximum flexibility and high-performance API development. By carefully considering your project’s needs and the strengths of each framework, you can make an informed choice that sets your API project up for success.

In this article, I take a deep dive into Flask vs Django. Want the TL-DR? They’re both open-source web frameworks that use the Python programming language to create and manage web applications, web services, and websites.

Sound intriguing? Great! Not sure what a web application framework is? No problem! I’ll cover all of the bases in this Flask vs Django head-to-head.

So, the next time someone assumes that Python is only for analytics and data science, you can tell them that it’s also popular for web development.

Let’s get started with this head-to-head comparison of Flask vs Django in 2024 to see who comes out on top.

build a meme Python website (Flask Tutorial for Beginners)
build a meme Python website (Flask Tutorial for Beginners)

Difference Between Django and Flask

Admin Interface

The useful admin interface is what makes Django a capable web system. Not at all like Flask, Django incorporates a ready-to-use admin system that empowers clients to carry out extended organization errands consistently. Based on the venture, it naturally creates admin modules. Engineers can indeed customize the admin interface in arrange to meet particular trade needs.

Database

Django has to bolster the ORM framework. Advantage of the ORM framework includes: Developers can take advantage of the ORM framework to work with an assortment of databases, including PostgreSQL, SQLite, Prophet, MySQL, and more. Developers don’t have to type in long SQL inquiries to execute common database operations. Whereas, Flask doesn’t support the ORM framework. Designers are required to type in SQLAlchemy (Protest Social Mapper and SQL toolkit for Python) in arrange to perform common database operations.

Built-in template engine

Not at all like Django, Flask doesn’t have a built-in layout motor. Flask is based on the Jinja2 format motor. Jinja2 is itself impacted by the Django format motor. Its employments coordinate a sandboxed execution environment, permitting engineers to speed up the advancement handle for energetic web applications. While Django incorporates a built-in format motor that permits engineers to make user-facing layers for web applications consistently nd quickly.

Project Structure

Django enforces a specific project structure, including a predefined directory layout. This can be helpful for maintaining consistency in larger teams or projects. Django projects typically have a well-defined structure with apps, templates, and settings where Flask is unopinionated about project structure, allowing developers to organize their code in a way that makes sense to them. While this flexibility can be liberating, it may require more planning and discipline in larger projects.

Use Cases

Django is well-suited for building large, complex web applications that require a lot of built-in features, such as content management systems (CMS), e-commerce platforms, and social networks. It shines in projects where rapid development and scalability are important where Flask is often chosen for smaller to medium-sized projects and APIs. It is a good fit for building RESTful APIs, microservices, and prototypes. Flask gives developers more control to pick and choose the libraries and components they need for their specific use case.

Support of Extra Integrations

Third-party apps are not supported by Flask, while in contrast, Django is compatible with a wide range of third-party apps.

Django could be a Python-based free, open-source system that takes after the MVT(model view Template) approach of structural design Flask could be a Python-based smaller-scale system without any set of specific instruments or outside libraries. It too doesn’t have a database layer or arrangements for shape approval and makes utilize of expansions.
Urls.py is utilized to set the association properties and demands are handled by the primary coordinating see of the regex list URI is most regularly than not set by the see decorator and centralized setup is additionally conceivable. Sometimes the recent designs are coordinated with the URIs, and the last mentioned is sorted in a default arrange
Doesn’t exclude setting flexibility It is accepted that all the conceptual stages to organize a Flask code rise and smaller-scale open-source to the applications number show in Flask as of now
Extend Layout is a Conventional extended structure Extend Layout is an Arbitrary structure
Django gives an all-inclusive encounter: you get an admin board, database interfacing, an ORM, and a registry structure for your apps and ventures out of the box. Flask gives straightforwardness, adaptability, and fine-grained control. It is unopinionated

Django provides built-in authentication and authorization systems, making it easier to implement user management and access control.

Flask leaves authentication and authorization to the developer. You can use third-party libraries like Flask-Login and Flask-Principal for these functionalities.

It is suitable for multi-page applications. It is suitable for single-page applications only.
Its framework structure is more conventional. Random web framework structure.

Django has a large and active community, which means access to extensive documentation, tutorials, and third-party packages. It is widely used in various industries.

Flask also has a thriving community, but it may have fewer resources compared to Django. Flask’s simplicity attracts developers who prefer to keep their stack minimal.

It doesn’t support any virtual debugging. It has a built-in debugger that provides virtual debugging.
Its working style is Monolithic. Its working style is diversified style.

Don’t miss your chance to ride the wave of the data revolution! Every industry is scaling new heights by tapping into the power of data. Sharpen your skills and become a part of the hottest trend in the 21st century.

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Last Updated :
06 Nov, 2023

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Python is most commonly associated with data science and analysis. But it can also be used to build powerful web applications. You may have heard of Flask and Django, two Python frameworks for developing web applications. In this tutorial, you will learn both the frameworks and the major points in Django Vs. Flask framework.

Disadvantage of Django

Here, are cons/drawback of the Django framework

  • It is a monolithic platform.
  • High dependence on Django ORM. Broad Knowledge required.
  • Fewer Design decisions and Components.
  • Compatibility with the latest technologies
  • A higher entry point for simple solutions
  • The larger size of the code
  • Too bloated for small projects
  • Underpowered templating and ORM
  • Templates failed silently
  • Auto reload restarts the entire server
  • High learning curve
  • Documentations does not cover real-world scenarios
  • Only allows you to handle a single request per time.
  • Routing requires some knowledge of regular expressions
  • Internal subcomponents coupling
  • You can deploy components together, which can create confusion.
Django Ecommerce Project | Django Project | Cart,Wishlist,Payment Gateway,Login Authentication
Django Ecommerce Project | Django Project | Cart,Wishlist,Payment Gateway,Login Authentication

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Lựa chọn phát triển web với Python: Django, Flask hay Pyramid

Bài đăng này đã không được cập nhật trong 2 năm

Lựa chọn phát triển web với Python: Django, Flask hay Pyramid

Khi nói tới Python, chắc không phải nghĩ nhiều mọi người sẽ nghĩ tới Machine Learning – một trong nhưng hot trend 2017. Tuy vậy, Python cũng là một ngôn ngữ lập trình đa năng có thể ứng dụng vào rất nhiều lĩnh vực khác nhau.

Trong các hệ thống, python được dùng để viết các script cho mục đích khác nhau liên quan tới file, monitor. Trong phát triển game, Python cũng có những framework dành riêng cho việc này. Hay nói tới các hệ thống cloud, người ta có thể nhắc tới OpenStack, cái tên đình đám có thể sánh ngang với VMWare vCloud.

Còn về phát triên web, Python thực sự không mạnh bằng PHP. PHP sinh ra để phát triển web, số lượng framework, cms PHP để phát triển web có thể khiên người dùng Python thấy thèm thuồng. Tuy vậy, không hẳn là Python quá yếu thế. Một số cái tên có thể tới để xây dựng web bằng Python như Django, Flask, Pyramid, Tornado…

Bài viết giới đây, mình sẽ so sánh ngắn gọn giữa 3 framework: Django, Flask, Pyramid để các bạn có thể tùy lựa chọn cho dự án web Python của bạn

Summary

In this Flask vs Django battle, the clear winner for you is the one that truly meets your needs. Some programmers even use both frameworks!

If you’re unsure where to begin, we recommend starting with Flask. Flask is practical because it’s easier to get going without feeling overwhelmed. Django is a fantastic web solution for creating cool apps, but less suitable for a novice.

Are you a professional developer? With Django’s broad feature set, you or your team will need to make fewer decisions. That should allow you to develop your project faster.

No matter which framework you choose, you can get it up and running easily on Kinsta’s Application Hosting platform. You can see just how easy by checking out our quick start examples for Flask and Django.

Bài viết được sự cho phép của tác giả Nguyễn Việt Hưng

Django và Flask là hai web-framework phổ biến nhất – thành công nhất của Python. Ngày này, khi nhìn các bảng tuyển dụng, sẽ thường thấy yêu cầu Django để làm web nhưng Flask dần trở thành công cụ quen thuộc của giới làm data. Nếu ai có hỏi “nên học cái nào” thì câu trả lời chuẩn nhất chỉ có một: nên học cả hai.

Microservices in Python using Flask Framework | Dockerize and Deploy to Kubernetes with Helm
Microservices in Python using Flask Framework | Dockerize and Deploy to Kubernetes with Helm

Authentication and authorization

Authentication means controlling who can access your web application, while authorization means providing specific permissions to those with access.

Django’s built-in authentication system handles both. It supports both users and user groups, and provides tools for granting and checking permissions. There are also a bunch of third-party packages for advanced authentication capabilities, including SSO, LDAP, and two-factor authentication.

Django also comes with an admin interface. The built-in admin app provides a ready-to-use interface for content management. After registering your models in admin.py, you’ll be able to perform CRUD (create, read, update, delete) operations on them.

A vast majority of developers who took part in the Django Developers Survey find admin and auth very useful:

To enable the admin app, add it to the list of installed apps in settings.py and provide a route for ‘

admin/

’ in urls.py. In PyCharm, Django admin is enabled by default and no additional steps are required. Just make sure that the Enable django admin checkbox is selected when creating your Django project.

Being inherently lightweight, Flask doesn’t offer any authentication or authorization features out of the box. However, there are extensions that can be integrated into your Flask application and work well together. For example, Flask-Admin provides an admin interface combined with ORM support, while Flask-Login and Flask-Security add the essential authentication features.

The downside of such an approach is that these extensions are not part of Flask and have their own release cycles, which may result in backward compatibility issues.

Bootstrapping Code layout

Django cho phép bạn xây dựng kiến trúc một cách nhanh chóng bởi CLI tools của mình. Django tách project thành các app nhỏ:


$django-admin startproject hello_django # tạo project $django-admin startapp first_app # tạo app

Django cho phép migrate, makemigrations, dumpdata, loaddata ngay trên console sử dụng CLI tools:


$python manage.py dumpdata > datadump.json $python manage.py loaddata datadump.json $python manage.py migrate $python manage.py makemigrations

Flask vốn không base trên MVC nên bạn muốn vẽ vời thế nào bạn phải tự code. Đối với những dự án cần tách biệt giữa các thành phần Flask có tính năng

blueprints

.

Pyramid có hỗ trợ bootstraping. Pyramid’s bootstrapping tool được gọi là

pcreate

:


$pcreate -s starter hello_pyramid

Python Web Development | Web Development Using Django | Python Django Tutorial | Edureka
Python Web Development | Web Development Using Django | Python Django Tutorial | Edureka

Security

As mentioned, Django has built-in protection against a number of common attack vectors like CSRF, XSS, and SQL injection. These security measures help protect against vulnerabilities in your code. The Django development team also proactively discloses and quickly fixes known security vulnerabilities. Flask, on the other hand, has a much smaller code base so there’s less surface area open to attack. However, you’ll need to address and fix security vulnerabilities in your hand-crafted app code as they surface.

At the end of the day, you’re only as secure as your weakest link. Since Flask is much more reliant on third-party extensions, applications will only be as secure as the least-secure extension. This puts more pressure on your development team to maintain security by evaluating and monitoring third-party libraries and extensions. Keeping them up-to-date is the most important (and often the hardest) thing here since each extension has its own development team, documentation, and release cycles. In some cases, there may only be one or two developers maintaining a particular extension. When evaluating one extension over another be sure to review GitHub issues to see how long it generally takes for maintainers to respond to critical issues.

This does not mean that Django is inherently more secure than Flask; it’s just easier to secure upfront and maintain during the life of your application.

Resources:

  1. Flask Security Considerations
  2. Security in Django
  3. Securing Flask web applications
  4. Protect Your Django Web Application From Security Threats

Combining Applications¶

If you have entirely separated applications and you want them to work next
to each other in the same Python interpreter process you can take
advantage of the

werkzeug.wsgi.DispatcherMiddleware

. The idea
here is that each Flask application is a valid WSGI application and they
are combined by the dispatcher middleware into a larger one that is
dispatched based on prefix.

For example you could have your main application run on and your
backend interface on

/backend

.

from werkzeug.middleware.dispatcher import DispatcherMiddleware from frontend_app import application as frontend from backend_app import application as backend application = DispatcherMiddleware(frontend, { ‘/backend’: backend })

Learn Django by Building an Online Marketplace – Python Tutorial for Beginners
Learn Django by Building an Online Marketplace – Python Tutorial for Beginners

Overview

Django là

Free and open-source web framework

viết bằng Python, follow theo

model-view-template

(MVT). Các phiên bản được maintained bới Django Software Foundation. Phiên bản đầu tiên phát hành vào năm 2005, cách đây 12 năm. Phiên bản hiện thời tính tới thời điểm 01/11/2017 là 1.11.7. Trang chủ là https://www.djangoproject.com/

Flask là

microframework

base từ lib Werkzeug và Jinja2. Werkzeug là một WSGI utility library for Python, được sử dụng rộng rãi với

BSD license

. Jinja2 là một full template engine. Phiên bản đầu tiên ra mắt vào 01/04/2010 bởi

Armin Ronacher

dưới

BSD license

. Phiên bản hiện tại tính tới thời điểm bài viết là 0.12.2. Trang chủ là http://flask.pocoo.org/

Pyramid là một

Open source WSGI web application

viết bằng Python. Phiên bản đầu tiên được ra mắt sớm hơn cả Django, vào 09/2005. Pyramid được phát triển dưới tên dự án

Pylons Project

với

BSD license

.

Templating

Django mặc định configured sử dụng template engine của Django. Tuy nhiên, bạn có thể thay thế hoặc kết hợp với một engine template khác như Jinj2 một cách rất dễ dàng.

Flask sử dụng Jinja2 là template engine mặc định.

Pyramid sử dụng Chameleon template engine.

Jinja2 và Django Template khá giống nhau ở nhiều điểm, nên người dùng dễ tiếp cận, sử dụng kết hợp chúng trong Django hoặc Flask. Trong khi đó, với Pyramid bạn cần có thời gian làm quen với nó.

A Brief Introduction to Flask (Python Web Framework)
A Brief Introduction to Flask (Python Web Framework)

What Is Django?

Django is a free programming language with improved features and performance. Django is preferred by developers because it allows them to use it for standard functions with minimal interference from systems, protocols, and management.

Django is also known as a ‘framework for fussbudgets with deadlines,’ because it promotes rapid development and clean, pragmatic design. The framework’s agile development process focuses solely on delivering quality in a timely and efficient manner. Site maps, content organization, client information, and many other basic development functions are handled quickly by Django. It only cares about completing the application as soon as possible.

Adrian Holovaty and Simon Willison, two web developers, created Django in 2003. Django was born when they started making web applications with Python. It was finally made public two years later.

Django is named after Django Reinhardt, a well-known early and mid-century Belgian-Romani jazz guitarist.

Disadvantage of Flask

Here, are cons/drawback of Flask

  • Slower MVP development in most cases,
  • Higher maintenance costs for more complex systems
  • Complicated maintenance for larger implementations.
  • Async may be a little problem
  • Lack of database and ORM
  • Setting up a large project requires some previous knowledge of the framework
  • Offers limited support and smaller community compared to Django
How to Create a Login System in Python Using Django? | Python Projects | GeeksforGeeks
How to Create a Login System in Python Using Django? | Python Projects | GeeksforGeeks

Architecture

As you may already know, there are two main styles in software architecture: the monolithic one and microservices.

Monolithic applications are ‘normal’ applications: They have a single codebase written in one programming language, are built and deployed as a single unit, and often have unified data storage.

Microservices architecture, on the other hand, involves developing a suite of small applications, where each unit is responsible for one thing and communicates with the others by means of an API. Every microservice has its own database, is deployed and scaled independently, and fails independently, without putting down the whole system.

Django encourages creating projects with several apps, where each app takes over a specific function. That might sound very similar to microservices, but it’s not. There’s still a single codebase and often a single database.

If you choose to develop with Django in PyCharm, you’ll always have access to a bird’s-eye view of the whole project structure in the Django Structure tool window:

Flask, the microframework, seems to be a perfect choice for microservices. With Flask, you can easily create a bunch of lightweight apps, empowering each with only the tools and extensions it requires. Full compliance with RESTful principles will also be a great help in establishing stateless connections between the microservices.

Django can be used in exactly the same way, although in this case the components of the system will be not so compact because of Django’s “batteries included” philosophy. But as long as you can use any stack for each particular microservice, you might as well develop a Django one when you need some Django-specific capabilities.

Learning curve

Django is a complete framework, which results in a more challenging learning curve. On the other hand, you don’t need to learn anything besides Django. Everything a newbie usually needs, like ORM, authentication, authorization, and more, is already available in the main package, which comes with extensive documentation.

A Flask application can be created in seconds by writing just a few lines of code in a single file. So, if you are looking for a quick start, Flask may be a better choice. However, you have to be ready to explore extensions and other packages if you decide to develop your project further.

At the same time, Django projects tend to have more concise and consistent architecture. This results in shorter onboarding times when developers join already running projects.

From a team lead’s perspective, it’s also very important to take into account the needs and capabilities of your team.

Building a Dynamic Stock Analysis Dashboard with Django: A Step-By-Step Guide | AmCharts | Bootstrap
Building a Dynamic Stock Analysis Dashboard with Django: A Step-By-Step Guide | AmCharts | Bootstrap

Conclusion

After reading and comprehending the in-depth information about both web frameworks, it is easy to conclude that they have their own advantages. There must be a reason why both are popular python-based frameworks in the web development domain.

Flask provides complete control and is ideal for small projects that require experimentation.

Django is a complex framework that requires extensive knowledge, but it is one of the best for developing sophisticated applications.

If you’re interested in becoming a Python programmer, Simplilearn has the resources to help on your way. Simplilearn’s Python course covers the fundamentals of Python and how to apply it to real-world applications. The modules, lesson-end projects, and assignments comprising the curriculum cover data operations in Python, strings, conditional statements, error handling, shell scripting, web scraping, and the commonly used Python web framework, Django.

Once you complete the course, you gain certification in an essential skill for success in today’s IT world. Many IT-related careers rely on a solid knowledge of different programming languages, which is why it’s a smart idea to learn Python for Data Science, for example.

Python developers in the United States can earn an annual average salary of USD 110,447, according to Indeed. The site further points out that in India, the average Python developer salary averages around ₹566,019.

But wait, there’s more! Simplilearn also offers a Data Science with Python course. The course teaches you to master the concepts of Python programming. Through this, you will gain knowledge in data analysis, machine learning, data visualization, web scraping, and natural language processing. When you successfully complete the course, you will have mastered the essential tools of Data Science with Python.

Have any questions for us regarding this article? If yes, please leave them in the comments section, and we will get back to you as soon as possible.

Happy learning!

Flask vs Django – Difference Between Them

Key Features Of Django

The Django framework offers an assortment of compelling features ideal for businesses that hire developers who are dedicated to delivering projects on time. Let’s go through some of them.

Robust Security

Django’s approach to security helps users combat malicious threats like SQL injection, cross-site request forgery (CSRF), cross-site scripting (XSS), clickjacking, and more.

Django automatically plugs vulnerabilities that the backend developer could unintentionally overlook while creating a web app. Plus, you can handle user accounts and passwords securely with Django’s active user authentication feature.

Adapts to Heavy-Load Projects

Django can accommodate a large volume of traffic, like complex social networks and content management systems.

Since optimizing loading times and performance can be tricky when working with database systems like MongoDB and Redis, Django can quickly handle all of the data, reducing loading time. Django further safeguards error-free results regardless of how complex the coding is.

A Don’t Repeat Yourself Philosophy

Building a web app involves a great deal of repetition, such as using business logic and HTML templates. This type of redundancy causes logical errors and maintenance problems.

By following a Don’t Repeat Yourself (DRY) principle, Django ensures that the information isn’t duplicated. Logic that supports a group of data ought to be distinct and reliable. Therefore, you can concentrate on writing original code while reusing existing code. That helps speed up web application development.

SEO-Friendly

Dajngo facilitates site mapping and has the ability to generate dynamic links and URLs based on targeted keywords. This can help you improve your site’s search engine rankings.

Variety of Packages

Django supports a plethora of packages for developing a fully functional application. It discourages you from relying on third-party solutions by supplying kits for nearly everything.

For instance, you can use the Django REST framework to build APIs or the Django CORS Headers pack to create cross-origin requests. The Django Debug Toolbar assists in troubleshooting apps, while Django Allauth grants social and local authentication.

Flask VS Django for Python Websites
Flask VS Django for Python Websites

Conclusion

At the end of the day, should you use Flask or Django?

It’s really difficult to say which Python web framework is better, let alone the best.

Both Django and Flask are equally suitable for many different tasks, but there are also so many aspects in which they differ. Every developer will make their own decision as to which framework to use, taking into account their skills, goals, and the nature of the projects they’re working on.

The table below summarizes all the points made in the article:

Django Flask
Templates Django template language: Jinja2:
URLs
Databases
Authentication and authorization Built-in apps: Extensions:
Testing
Architecture Perfect for microservices:
Learning curve

FAQ

Which is better: Django or Flask?

Both Django and Flask are modern, well-supported, and regularly updated frameworks. None of them is ‘better’, but you can choose which framework better suits your needs based on how complex your application or service will be, its architecture, the skills of your team members, etc.

If you are choosing your very first web framework for learning, you may want to start with Flask. It will be easier for you to learn Django afterwards.

Should I learn Django or Flask for a job?

Both frameworks are very popular, and you definitely need to know at least one of them to work in web development. However, learning both will help you land a job faster.

Is Django still relevant in 2023?

Yes. According to the Python Developers Survey 2022, Django was used by 39% of Python developers. The preliminary results of the Developer Ecosystem Survey 2023 show that Django’s popularity remains high at 40%.

Is Flask easier than Django?

Yes, from a learner’s perspective, Flask is a more accessible framework. A basic Flask application can be created in a single file in no time, whereas writing a “Hello World” in Django requires creating a few files and other preliminary steps.

At the same time, Django is a self-contained and well-documented framework, which means that you can use it to build a full-fledged project without having to choose and incorporate any extensions.

Is the Django framework the same as the Flask framework?

While both Django and Flask are popular choices for web development with Python, they are different in many aspects and each suits different use cases.

Django is generally used for larger, more complex projects that can benefit from its “batteries included” approach and numerous built-in features.

Flask is a good choice for simple applications or microservices. It’s a minimalistic framework that offers developers the flexibility to add the functionality they need.

Can you use Flask with Django?

Mixing Django and Flask in one application doesn’t make much sense, although it is technically possible. They have overlapping functionalities and often handle similar tasks in a different way. Bringing both Flask and Django into one project will cause unnecessary confusion and complexity.

However, combining Flask and Django can be justified in specific cases, for example, as you migrate your project from one framework to another. Another case is microservices that may require specific features, or be developed by teams with different skill sets.

Useful links

Documentation
  • Django documentation
  • Flask documentation
  • Jinja documentation
  • Django support in PyCharm
  • Flask support in PyCharm
Tutorials
Videos
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Working with this Document¶

Each of the techniques and examples below results in an

application

object that can be run with any WSGI server. For development, use the

flask run

command to start a development server. For production, see
Deploying to Production.

from flask import Flask app = Flask(__name__) @app.route(‘/’) def hello_world(): return ‘Hello World!’

Python Developers... Learn DJANGO
Python Developers… Learn DJANGO

What Is Flask?

Arriving in 2010 and developed by Armin Ronacher, the Flask framework is a Python-based micro-framework with minimal dependency on external libraries, allowing developers the flexibility to choose their preferred design pattern, database, plugins, and more.

Initially, Flask was developed to experiment with the integration of the Werkzeug WSGI (Web Server Gateway Interface) toolkit and the Jinja2 template library.

Now a fully-fledged framework that is lightweight and extensible, Flask doesn’t take a ‘batteries included’ approach. This means that developers can search for the extensions or plugins they need without extra weight.

Some would say that Flask is very Pythonic, which is reflected in an easy learning curve. This is particularly clear when you build the time-honored Hello World web app, which only needs a few lines of code, as you’ll soon discover when checking out any Flask tutorials.

Flask Key Features

  • Lightweight & Extensible: Developers have independence and control over application architecture, libraries, and extensions, along with a neat API.
  • Adaptable: Easy to use with any working style, which suits experienced developers.
  • Request Handling: Supports HTTP and RESTful requests.
  • Testing & Debugging: Integrated unit testing & debugger allow for quick debugging and development.
  • Secure Cookies: HTTP request attributes provide security and prevent unauthorized access.
  • Flexible & Scalable: Support for WSGI templates allows for flexibility and scalability.
  • Popular: Used by large companies like Netflix, Reddit, Uber, Lyft, Zillow, Patreon, Airbnb, and MIT.

Key Difference between Flask and Django

  • Flask provides support for API, while Django doesn’t have any support for API.
  • Flask does not support dynamic HTML pages, and Django offers dynamic HTML pages.
  • Flask is a Python web framework built for rapid development, whereas Django is built for easy and simple projects.
  • Flask offers a diversified working style, while Django offers a Monolithic working style.
  • URL dispatcher of the Flask web framework is a RESTful request on the other hand, the URL dispatcher of the Django framework is based on controller-regex.
  • Flask is a WSGI framework, while Django is a Full Stack Web Framework.

In this tutorial of difference between Flask vs Django, we will discuss the key differences between Django and Flask. But before discussing the difference between Django vs Flask, let’s first learn “What is Django?” and “What is Flask?”. Let’s start with Flask:

WTF is Django? (In 15 seconds) #django #technology #programming #business
WTF is Django? (In 15 seconds) #django #technology #programming #business

Kết luận

Bài này không nói Django hoàn hảo, dùng cho mọi trường hợp. Ví dụ nếu website của bạn không dùng database, không cần trang admin (như web của data science) thì Flask nhanh, nhẹ hơn Django nhiều phần. Hay khi bạn biết mình đang làm gì, biết đủ những thư viện để dùng ghép lại xịn hơn cả những gì Django có sẵn, thì Flask là lựa chọn tuyệt hảo. Flask không phải đồ chơi, phần core của Uber đã từng được viết bằng Flask, Airflow – công cụ không thể thiếu trong các hệ thống data cũng chính là một sản phẩm dùng Flask. Vậy nên, hãy học cả 2, nhé. Và nhớ là, Django không hề khó như bạn tưởng.

Bài viết gốc được đăng tải tại pp.pymi.vn

Có thể bạn quan tâm:

  • Mẫu bảng mô tả công việc lập trình Python
  • CORS là gì? Giới thiệu tất tần tật về CORS
  • 20 tài liệu học Python thiết thực để trở thành lập trình viên chuyên nghiệp

Xem thêm các việc làm Developer hấp dẫn tại TopDev

Django vs Flask: Which is the Best Python Web Framework?

Philosophy

Django and Flask are both free, open source, Python-based web frameworks designed for building web applications.

When compared to Flask, Django embraces stability as well as a “batteries included” approach where a number of batteries (e.g., tools, patterns, features, and functionality) are provided out-of-the-box. In terms of stability, Django generally has longer, more rigid release cycles. So, while Django releases come with fewer shiny new features, they tend to have stronger backwards compatibility.

Based on Werkzeug, Flask handles the core scaffolding well. Out-of-the-box, you get URL routing, request and error handling, templating, cookies, support for unit testing, a debugger, and a development server. Since most web applications need quite a bit more (like an ORM, authentication and authorization, to name a few), you get to decide how you want to build your application. Whether you leverage third-party extensions or customize the code yourself, Flask stays out of your way for this. It’s much more flexible than Django. There’s also much less surface area open to attack and less code to review if you need to crack open the hood and look at the source code.

I highly encourage you to read and review the Flask source code. Clean, clear, and concise — it’s an excellent example of well-structured Python code.

Python Flask vs Django Explained in 3 Minutes ✅
Python Flask vs Django Explained in 3 Minutes ✅

Testing

Testing is an integral part of professional web development. Let’s see what the most popular web frameworks have to offer us for testing our web applications.

Both Django and Flask have built-in testing support compatible with the native Python’s unittest module. They also provide a test client for sending HTTP requests to the application.

One of the few differences lies in handling the databases during testing. If your tests involve database operations, Django will create separate test databases for them. In Flask, developers need to manually ensure that their production database is not affected by tests. Third-party extensions, like Flask-SQLAlchemy, can help with that.

If you would like to benefit from advanced features of specialized testing libraries, such as pytest, you can use pytest-flask or pytest-django.

To test the API of your web service or application, try PyCharm’s HTTP Client. It lets you create and execute HTTP requests right in the code editor.

Web framework là gì

Một framework là một bộ thư viện, thường gồm nhiều tính năng phục vụ đưa ra sản phẩm cuối cùng chạm tới người dùng. Ví dụ

requests

là một library, chỉ cung cấp tính năng HTTP client, hay

bs4

chỉ cung cấp tính năng bóc tách/ truy cập dữ liệu HTML, hay

sqlalchemy

là library giúp truy cập và tương tác với database, thì Flask/Django cung cấp một bộ khung kèm các “thư viện” để làm ra một sản phẩm tới tay người dùng (trang web). Frame trong tiếng Anh có nghĩa là “khung”, framework cung cấp cái khung, lập trình viên điền những thứ mình muốn vào đó, framework sẽ tự lo chạy. Vì vậy khi dùng framework, sẽ có cảm giác như ta không biết nó hoạt động thế nào, chỉ biết là điền đúng những thứ yêu cầu thì nó sẽ hoạt động.

Django là framework đầy đủ (full-fledge), có đủ mọi thứ, nên sẽ càng có thêm cảm giác ta chỉ điền chút xíu là nó tự chạy, mọi thứ đều có khuôn mẫu sẫn rồi. Flask là micro-framework, chỉ có phần khung cơ bản, các phần còn lại cho phép người dùng tùy chọn mà đắp vào, vậy nên có phần dễ hiểu hơn, ít phép màu hơn.

Cũng vì sự khác biệt này, dẫn tới tài liệu trang chủ của 2 framework viết rất khác nhau. Flask vào đời bằng một website dùng 7 dòng code, khiến người dùng rất dễ học, dễ bắt đầu với sự đơn giản này. Còn Django lại dùng ví dụ phức tạp, mặc định người dùng sẽ cần làm thứ “phức tạp” như vậy nên học thế cho quen.

Thế nhưng nếu không dựa vào 2 cái tutorial đấy để đánh giá, liệu Django có phức tạp hơn Flask, hay thậm chí còn đơn giản hơn? Bài nầy sẽ dựa trên 2 yếu tố để so sánh: 1. số khái niệm bạn cần biết 2. số dòng code bạn cần viết.

Bắt đầu.

Cài đặt

Cài đặt Flask

pip install flask

Cài đặt Django

pip install django

Kết quả: hòa, dễ như nhau:

Flask 1 - Django 1

Viết một website hello world và hello mình

Flask

Tạo 1 file tên bất kỳ nhưng tốt nhất đặt là

hello.py

(tuyệt đối không đặt là

flask.py

do trùng tên flask)

1 from flask import Flask 2 app = Flask(“my website”) 3 4 @app.route(“/”) 5 def hello_world(): 6 return “Hello world” 7 8 @app.route(“/hello/

“) 9 def hello(name): 10 return “Hello {}”.format(name)

Chạy, theo hướng dẫn trên trang chủ (nếu dùng Windows vào xem lệnh tương ứng):

$ export FLASK_APP=hello.py $ flask run * Running on http://127.0.0.1:5000/

Điểm ấn tượng nhất ở đây là chỉ có 10 dòng, trong đúng 1 file, mà chạy thành trang web.

Tổng số thao tác phải làm: 3 – tạo 1 file, điền nội dung, gõ lệnh để chạy.

Django

Django không làm web trong 1 file, nó dùng các câu lệnh có sẵn để sinh ra các file, tức ta chỉ phải gõ lệnh, chứ không phải gõ nhiều code. Gõ 3 lệnh sau là chạy luôn trang web:

$ django-admin startproject project1 $ cd project1/ $ ./manage.py startapp hello $ ./manage.py runserver Starting development server at http://127.0.0.1:8000/

Ngay lập tức đã có trang web mẫu của Django – thậm chí chưa gõ tí code nào. Để có kết quả giống Flask ở trên, cần sửa 2 file:

File

hello/views.py

, viết các function tương tự flask:

from django.http import HttpResponse def hello_world(request): return HttpResponse(“Hello world”) def hello(request, name): return HttpResponse(“Hello {}”.format(name))

File

project1/urls.py

thêm 3 dòng:

from hello import views urlpatterns = [ # có sẵn path(‘admin/’, admin.site.urls), # có sẵn path(”, views.hello_world, name=’hello_world’), path(‘hello/

‘, views.hello, name=’hello’), ] # có sẵn

Giờ chạy

./manage runserver

sẽ có kết quả y hệt Flask.

So sánh thao tác

Tổng số dòng code phải thêm vào Django là 8 – cũng chính bằng số dòng Flask phải viết – không tính dòng trống. Django phải chạy nhiều hơn 2 lệnh – nhưng chỉ cần phải làm khi bắt đầu dự án. Flask viết code trong 1 file, còn Django phải sửa 2 file. ở đây có thể xem như hòa nhau không bên nào hơn/kém quá cả.

So sánh khái niệm

Phần khác nhau chủ đạo giữa Django và Flask là cách ghi URL. Người dùng Flask tạo một Flask object, đặt tên là app, sau đó sử dụng

decorator

@app.route(“/hello/

“)

để gắn đường dẫn

/hello/name

cho function ngay dưới nó (function hello). Decorator không phải một khái niệm đơn giản ở đây, mặc dù người dùng có thể cứ nhắm mắt rồi gõ theo và hiểu nôm na là gắn đường dẫn cũng được.

Django chọn giải pháp ghép đường dẫn với function thông qua file

urls.py

, import module

views

từ thư mục

hello/

(tạo lúc chạy “startapp hello”), sau đó gán đường dẫn bằng cách gọi function

path

:

path(‘hello/

‘, views.hello, name=’hello’),

Dài dòng hơn Flask một chút là phải ghi

name="hello"

, không có ở đầu URL, và kiểu

str

thì ghi là

str

chứ không ghi

string

như Flask.

Khi mới bắt đầu, khó có thể thấy lý do Django viết riêng file

urls.py

để làm gì, khi mà flask @ lên đầu rất gọn ghẽ. Thì tới lúc có 20 URL bạn sẽ hiểu tại sao. Làm thế nào để liệt kê tất cả URL trong app của mình? Các URL của Flask rải rác khắc nơi, mỗi cái nằm trên đầu 1 function, nếu như mỗi function dài 50 dòng, thì việc tìm sẽ khá vất vả – hoặc phải dùng chức năng tìm kiếm, hoặc phải có IDE để hỗ trợ. Còn với Django tất cả đều nằm gọn trong

urls.py

.

Không hiểu tại sao Flask lại chọn

string

để ám chỉ kiểu string trong Python, vốn viết là

str

, Django lại ghi thêm điểm ở đây.

Có thể bạn đã biết, rằng không nhất thiết phải dùng trong Flask, bởi decorator này chỉ làm đơn giản có 1 việc: giống Django. Thay vì viết hai dòng

@app.route

trên đầu function, viết hai dòng này SAU khi định nghĩa các function:

app.add_url_rule(“/”, “hello_world”, hello_world) app.add_url_rule(“/hello/

“, “hello”, hello)

Đây chính làm điều mà

@app.route

làm, như mô tả trong tài liệu của nó:

A decorator that is used to register a view function for a given URL rule. This does the same thing as :meth:


add_url_rule

but is intended for decorator usage::

Chốt: Django gõ nhiều hơn 2 lệnh, sửa thêm 1 file, nhưng sử dụng ít khái niệm cao cấp hơn Flask. Nếu dễ tính, thì cho là hòa, còn không Django dành chiến thắng ở đây.

Tỉ số:

2 - 2

Thêm trang dùng template

Flask

Tạo 1 thư mục tên

templates

ngay cạnh file

hello.py

, rồi tạo file

index.html

chứa code HTML và Jinja2 template.

{% for fw in frameworks %} {% if fw|length > 5 %}

{{ fw }}

{% else %} {{ fw }} {% endif %} {% endfor %}

Code sửa thành

from flask import Flask, render_template @app.route(“/web”) def frameworks(): return render_template(“index.html”, frameworks=[“Flask”, “Django”])

Django

Tạo thư mục tên

templates/hello

trong thư mục

hello

, sau đó tạo

index.html

và nội dung copy y hệt phần template của Flask.

Thêm function sau vào

hello/views.py

# chú ý render đã được import sẵn ở file view.py ngay khi tạo app def frameworks(request): return render(request, “hello/index.html”, {“frameworks”: [“Flask”, “Django”]})

Và thêm 1 dòng vào

project1/urls.py

:

path(‘web’, views.frameworks, name=’frameworks’),

Ngoài ra phải thêm

'hello'

vào file

project1/settings.py

Trong list

INSTALLED_APPS

INSTALLED_APPS = [ …, ‘hello’, ]

Phần này lại hòa, template mặc định của Flask là

jinja2

tương đương với Django template, kể cả cú pháp cũng rất giống nhau. Django phải thêm 1 dòng vào file

settings.py

nhưng việc này cũng chỉ phải làm một lần duy nhất (lẽ ra nên làm luôn sau khi createapp từ đầu).

Django app

Khi chạy lệnh

startproject

ban đầu, nó sinh ra các file cần thiết cho một dự án Django (

urls.py

,

settings.py

,

manager.py

…, và nó chỉ phải chạy duy nhất 1 lần trong 1 dự án. Với Flask, bạn tạo thư mục bằng tay.

Django đưa ra khái niệm có nhiều app trong một dự án. Flask cũng có khái niệm tương tự, gọi là Blueprint. Nó không cần thiết cho ví dụ 6-10 dòng, nhưng khi làm một website nhiều tính năng thì blueprint là cách tổ chức chính thức của Flask, ngay cả trong bài tutorial của Flask cũng dùng luôn khái niệm này. Như vậy chỉ khác nhau việc học trước hay học sau, chứ không phải Flask thì không dùng tới.

Flask không ép (không hướng dẫn) người dùng cách tổ chức code, khi dự án lớn dần lên, có 3-5000 dòng code, ắt phải sinh ra file mới, phải sắp xếp, tổ chức sao cho hợp lý – mà thế nào là hợp lý thì không phải ai cũng tìm ngay ra cách. Dự án Flask khi rơi vào tay lập trình viên chưa có nhiều kinh nghiệm làm web sẽ dẫn tới code mỗi thứ một nơi, đi tìm cũng thấy mệt. Flask không hướng dẫn người dùng ngay từ đầu, nếu gặp phải người chưa có kinh nghiệm tổ chức, sẽ trở thành vô tổ chức.

Django bắt đầu bằng việc đặt mỗi thứ vào một nơi quy định sẵn, ban đầu có vẻ hơi phiền phức, nhưng sự gọn gàng ngăn nắp sẽ trả lợi ích rõ ràng về sau. Bạn có thể xem 10 dự án Django, cấu trúc đều như nhau, như mẫu của Django, thì 10 dự án Flask mỗi cái một kiểu.

Tỉ số: Flask 2 – Django 3

Thêm Database, thêm tính năng đăng nhập, thêm trang admin

Đến đây, việc của người dùng Django là mở tài liệu ra, đọc phần model, đọc phần admin page rồi làm theo hướng dẫn, đầy đủ hàng trăm tính năng có sẵn, thì người dùng Flask lại phải lo đi tìm:

  • dùng database nào? nếu dùng MySQL thì dùng driver nào?
  • có dùng ORM không? nếu có thì phải học SQLAlchemy, tương đương với học Django ORM
  • dùng SQLAlchemy rồi có phải dùng flask-sqlalchemy không (có).
  • khi đổi schema table (thêm/bớt/sửa cột trong 1 SQL table) thì phải làm thế nào? MigrateDB thì dùng cái gì? (Flask-Migrate / alembic)
  • Viết trang admin (ví dụ website quản lý sinh viên thì đây là trang để thêm/bớt/sửa/xóa sinh viên) thì viết ra sao (có thể dùng flask-admin)
  • Đăng nhập thì làm thế nào? (flask-httpauth)
  • Nhập/validate form thì dùng cái chi? (WTForm)
  • … tiếp tục …

Tỉ số: Flask 2 – Django 4

Kết quả

Hòa.

Django Vs Flask | Django Vs Flask: Which is better for your Web Application? | Edureka
Django Vs Flask | Django Vs Flask: Which is better for your Web Application? | Edureka

Flask vs Django: Which Should You Choose?

By comparing the two frameworks on various criteria, neither Flask nor Django can be deemed superior across the board.

Flask tends to be simpler, while Django is preferred for large-scale projects with rapid development and offers more incorporated features.

Both frameworks are excellent for creating web apps, and the best one for you will depend on the project’s size, demands, and existing requirements.

When Should You Use Flask or Django?

You will now see why you should choose one over the other now that you know the differences between Flask and Django and what each is used for.

You should use Django when:

  • You are working on a large project and deadlines are the deciding factor.
  • You want to scale up to a more complex task later on.
  • You need an active online community and support.
  • When you want to create web apps with ORM support, API backends, and future plans to incorporate high-end technologies like Machine Learning.

You should use Flask when:

  • You are working on smaller projects with coding flexibility.
  • You need API support and want to include more extensions in the future.
  • You want more control over your database.
  • Flask is the best choice for creating static websites, rapid prototypes, MVPs, and RESTful web services.
Django vs Flask - what to choose? #shorts #coding #programming
Django vs Flask – what to choose? #shorts #coding #programming

Key Features Of Flask

The features of any framework can indicate the applications for which it’s most useful. Flask has some cutting-edge features for building and optimizing web applications. Here are a few prominent Flask features you should know.

Lightweight

Flask doesn’t use external libraries for its development process. This makes it lightweight. It is Python-based on a smaller scale without any set of specific instruments.

It also doesn’t have a database layer or arrangements for shape approval and utilizes expansions.

Unit Testing System

Flask’s integrated unit testing system helps speed up debugging and encourages robust development.

Extension Support

Flask supports the introduction of third-party extensions which add functionality to your application. Among the many available Flask extensions are Flask SQLAlchemy, which adds support for working with databases, and WTForms, which supports working with web forms.

Other extensions include those responsible for security. In other words, where Flask falls short, it compensates with support for extensions.

WSGI Compatibility

Werkzeug, on which Flask is based, is a Web Server Gateway Interface (WSGI) utility library. This makes Flask applications compatible with any WSGI-compliant web server.

There are many WSGI web servers available, but In a production environment, robust servers like Nginx or Apache are called for. Luckily, those popular servers can be configured to support Flask’s WSGI functionality.

Working with databases

Most web applications deal with data. Data is stored in databases, which are provided by different vendors. Let’s look at database support in Django and Flask.

Django has built-in Object Relational Mapping (ORM). ORM allows manipulating data in databases like objects in code. Django’s ORM supports PostgreSQL, MariaDB, MySQL, Oracle, and SQLite. Here’s what Django developers tend to choose, according to the Django Developers Survey 2022:

If you are going to store data in non-relational databases, like MongoDB or Redis, keep in mind that there is no native support for them in Django. According to the above survey, only 6% of developers use databases that are not officially supported by Django.

Another feature that facilitates database management in Django applications is the migration system. Django creates migrations automatically based on the changes you make to the application code, and then applies them to the connected database. Migrations are database-agnostic, can be put under version control, and allow for convenient rollbacks.

To work with migrations, the built-in manage.py utility is used. It provides a set of commands for managing migrations. PyCharm has a convenient manage.py console with code completion, which makes operations with migrations easier.

What can Flask offer? Nothing is built in, but virtually anything can be implemented. You can, for example, use SQLAlchemy, Flask-Peewee, or Flask-Pony for ORM, or store your data in NoSQL databases with Flask-PyMongo, Flask-Cassandra, or Flask-Redis.

Django vs. Flask which is the best python web development framework?
Django vs. Flask which is the best python web development framework?

Other

Django Flask Pyramid
Admin Interface Yes No No
SQLAlchemy Support Yes. Có thể sử dụng kết hợp SQLAlchemy và Django ORM Yes Yes
Documentation Tài liệu offical rất cơ bản, dễ hiểu. Ngoài ra rất nhiều nguồn tutorial bên ngoài. Tài liệu offical vô cùng dễ hiểu cho người mới bắt đầu. Nó được đánh giá dễ tiếp cận nhất so với Django và Pyramid Tài liệu Pyramid khá là ít tuy nghiên rất dễ đọc
API RESTful Web Service Django đi kèm với nhiều lib hỗ trợ việc phát triển API một cách dễ dàng như Việc tạo RESTful API với flask Bạn có thể phát triển API, nhưng sẽ vất vả hơn so với Flask và Django
Website used Pinterest, Instagram, Bitbuckit, Disqus, Spotify, Firefox, Zapier, LiveCoding… Reddit, Mailgun,Twilio … SurveyMonkey, Reddit …

Dispatch by Subdomain¶

Sometimes you might want to use multiple instances of the same application with different configurations. Assuming the application is created inside a function and you can call that function to instantiate it, that is really easy to implement. In order to develop your application to support creating new instances in functions have a look at the Application Factories pattern.

A very common example would be creating applications per subdomain. For instance you configure your webserver to dispatch all requests for all subdomains to your application and you then use the subdomain information to create user-specific instances. Once you have your server set up to listen on all subdomains you can use a very simple WSGI application to do the dynamic application creation.

The perfect level for abstraction in that regard is the WSGI layer. You write your own WSGI application that looks at the request that comes and delegates it to your Flask application. If that application does not exist yet, it is dynamically created and remembered.

from threading import Lock class SubdomainDispatcher: def __init__(self, domain, create_app): self.domain = domain self.create_app = create_app self.lock = Lock() self.instances = {} def get_application(self, host): host = host.split(‘:’)[0] assert host.endswith(self.domain), ‘Configuration error’ subdomain = host[:-len(self.domain)].rstrip(‘.’) with self.lock: app = self.instances.get(subdomain) if app is None: app = self.create_app(subdomain) self.instances[subdomain] = app return app def __call__(self, environ, start_response): app = self.get_application(environ[‘HTTP_HOST’]) return app(environ, start_response)

This dispatcher can then be used like this:

from myapplication import create_app, get_user_for_subdomain from werkzeug.exceptions import NotFound def make_app(subdomain): user = get_user_for_subdomain(subdomain) if user is None: # if there is no user for that subdomain we still have # to return a WSGI application that handles that request. # We can then just return the NotFound() exception as # application which will render a default 404 page. # You might also redirect the user to the main page then return NotFound() # otherwise create the application for the specific user return create_app(user) application = SubdomainDispatcher(‘example.com’, make_app)

#1 Django tutorials | What is Django? | Python Web Framework
#1 Django tutorials | What is Django? | Python Web Framework

Features of Django

  • It’s a flexible framework that can be used to build any website (social network, news site, content management system, and so on) with content in HTML, XML, JSON, and other formats. It can be used in conjunction with any client-side framework.
  • It’s a safe framework that handles things like user account management, transaction management, cross-site request forgery, clickjacking, and more automatically.
  • One of the reasons Django is so popular for large web applications is that it is designed to handle high traffic demands.
  • Django, as a full-stack Python framework, includes a wide range of features for your web app, from user authentication to RSS feeds.

Features of Flask

  • Flask is more adaptable to different working styles and approaches to web app development than the opinionated Django framework. Flask is preferred by programmers with more coding experience or who require more control over the app design.
  • Flask supports multiple types of databases by default because it has no default model. This also simplifies the integration of databases into Flask applications.
  • Flask will make your life easier than Django if you’re looking to create a simple web app with a few static pages. Many programmers find Flask to be easily scalable for smaller web applications.
  • It comes with a built-in development server and fast debugger.
Setting up and Comparing Flask, FastAPI, and Django Python apps in WayScript
Setting up and Comparing Flask, FastAPI, and Django Python apps in WayScript

What Is Django?

Named after jazz guitarist Django Reinhardt (and not the Quentin Tarantino movie!), the Django framework is a full-stack Python-based web application framework released in 2005 to help developers easily create complex database-backed websites and applications.

Sometimes referred to as the framework for ‘fussbudgets with deadlines’, Django is favored for super-fast development. As a full-stack web application framework, it takes a batteries-included approach to let you, the developer, focus on building your web app.

With an agile dev process, the Django framework handles organizing content, site maps, client info, and other ‘basic’ functions to let you focus on building your Python project fast.

Django development is also very DRY (Don’t Repeat Yourself), so expect to reuse components and take advantage of built-in features like logins, database connectivity, database CRUD operations, and more.

Django Key Features

  • Versatile: You can use Django to build various Python projects like content management systems (CMS), social networking sites, and even scientific computing platforms.
  • Batteries Included: Bundles many useful features out of the box, including a caching framework with Memcached, content admin, site maps, RSS, authentication, and more.
  • Portable: Django is written in Python, providing portability to run on any platform.
  • Secure: Django bundles robust user authentication systems, and it helps avoid common security issues, such as SQL injection, clickjacking, cross-site scripting, and more.
  • Scalable: With a combination of independent layers and DRY principles, code reuse & maintenance enable scalability without issue.
  • Adaptability: Support for a variety of formats, including JSON, HTML, XML, and more.
  • Popular: Huge companies like Spotify, Instagram, Dropbox, Pinterest, Mozilla, YouTube, NASA, and National Geographic use Django in their tech stack.

What is Django?

Django is a web development framework for Python. This framework offers a standard method for fast and effective website development. It helps you in building and maintaining quality web applications. It enables you to make the development process smooth and time-saving.

It is a high-level web framework which allows performing rapid development. The primary goal of this web framework is to create complex database-driven websites.

URL dispatcher

URL dispatcher redirects incoming requests to specific views depending on the requested URL. Flask and Django handle this in different ways.

Routing

In Flask, routing is done by adding decorators to functions. Basically, here is how you create the application logic in Flask:

  1. Describe the desired behavior in a Python function.
  2. Decorate the function with

    @app.route

    .
  3. Specify the URL pattern in the parameter of the decorator (for example,

    @app.route(‘/’)

    ).

It’s as simple as that. Here’s the full code of a “Hello world” application in Flask:

from flask import Flask app = Flask(__name__) @app.route(‘/’) def hello_world(): return ‘Hello World!’ if __name__ == ‘__main__’: app.run()

Django uses dedicated Python files (usually, urls.py) in order to match the requested URL with the corresponding view (piece of application logic). Views are written separately in views.py. To show a page with “Hello World!”, your application must include the following files:

  • views.py: The app logic goes here.
  • urls.py: The routing is done here.
  • project’s urls.py: As Django is designed to have multiple applications in one project, you also need to include the URLs of the application in the project’s urls.py file.

To launch the “Hello World” application in Django, you also need to perform a few preliminary steps:

  1. Create a project.
  2. Create an app.
  3. Launch the Django server.

Thankfully, if you are working in PyCharm, all that is done automatically. For more information about creating Django projects in PyCharm, follow our Django app tutorial.

So, here is where Flask’s minimalistic approach shines. Its routing system is simple and intuitive, which perfectly fits small projects, especially learning ones. You can create your first Flask app in a matter of minutes, or use PyCharm’s Flask project template, which includes a sample “Hello World” application.

In complex cases, Django will be able to offer more powerful and flexible routing. To compensate for Django’s challenging routing system, PyCharm features a dedicated Endpoints tool window.

Handling URL parameters

URL parameters are variable parts of the URL that are used to send additional information to the application. Both Flask and Django support positional and named parameters, as well as type converters.

One advantage of Django is that it allows using regular expressions in URL patterns with the help of the

re_path()

function:

urlpatterns = [ re_path(r’^user/(?P

\w{0,50})/$’, views.user_details), ]

If you add such a pattern to your Django application, you’ll be able to request a URL, like

/user/john/

. The application will call the

user_details

function passing “

john

” as a parameter.

Compliance with RESTful principles

REST (Representational State Transfer) is an architectural style for web applications and services. Building web applications in accordance with REST principles is considered a best practice.

Flask enforces REST principles by design. It allows you to define routes for different HTTP methods separately.

In Django, views are associated with URL patterns regardless of the HTTP verb (GET, POST, PUT, DELETE, etc.). The subsequent differentiation is provided by the view, which is usually a class with the respective methods (

get()

,

post()

,

put()

,

delete()

, etc.):

This doesn’t mean that you can’t create a RESTful API in Django. Django REST framework is a package for developing web APIs that provides generic class-based views, a browsable API, serializers, and many other useful features. To build your first API in Django, follow our DRF tutorial.

Pros and Cons of Using Django

As you know, nothing interesting is ever completely one-sided, and Django is no exception. Like Flask, Django has numerous perks and a few obstacles.

Advantages

  • Full-stack framework
  • Batteries-included concept
  • Highly scalable
  • Comprehensive documentation
  • SEO-friendly
  • Cross-platform compatibility
  • Rapid development and fast processing
  • High-level of security
  • Excellent CDN management

Drawbacks

  • Unsuited for small projects
  • Lack of conventions
  • Monolithic work environment
  • Limited components and design options
  • Hard to master and has a steep learning curve
  • Doesn’t allow for simultaneous handling of multiple requests

Flask vs Django: Head-to-Head Comparison

We’ve now come to the battle of frameworks. Let’s put Flask against Django and find out which solution is better for you. Ready? Here we go.

Cost-Effectiveness

Both Flask and Django are free and open-source Python frameworks. From a business point of view, Flask can be more expensive to use than Django because it has fewer built-in features and needs more upkeep, particularly in terms of development time and security.

In any case, the cost of using either framework will be determined by your specific requirements. Should you need additional built-in functionalities or prefer a more comprehensive framework, Django could be a better choice for you.

Winner: Django

Development Time

Flask and Django intend to help developers work smarter and save a great deal of time. Yet, one lags behind the other here.

Despite doing a hatchet job on the overall development time, Flask typically adopts a “build from scratch” approach for the majority of your website, making full-fledged web application development fairly labor-intensive. If you’re an advanced user, your development timeline could be slowed by its limited native development features.

Flask also employs a Jinja2 template engine which is simple to use but consumes time during development.

In contrast, Django facilitates rapid development, especially if you have a tight deadline, thanks to its various built-in features and minimal code utilization.

For instance, developers can create a minimum viable product (MVP) faster with Django than with Flask. That’s why Django is ideal for getting big websites started.

Although Flask likewise allows for quick MVP development, there’s an obvious difference when it comes to the frontend. With Django, it’s faster to add the frontend and receive feedback.

Django’s integrated template engine expedites development when compared to Flask’s engine. What’s more, Django is equipped with a wealth of standard libraries that aid developers in building widely used functionalities and resolving common development issues.

Winner: Django

Ease of Use/Learning

If you’re a beginner but are already familiar with Python, it’s easy to get your head around Flask’s minimalist structure.

When implementing machine learning models, Flask is far more user-friendly for beginners than Django. It also requires fewer lines of code.

Django is a more complex web solution that requires extensive expertise to create a sophisticated application such as terminal commands, advanced Python programming skills, variables, loops, and functions.

The rich Flask documentation is particularly helpful for new users who wish to get started with the framework. It has a less steep learning curve than Django, involves a thorough explanation, and covers everything from installation to deployment.

Django, however, has far more documentation than Flask because it is a full-stack framework rather than a minimalist one.

Start with Flask, whether learning Django or Flask is your main objective. It’s excellent for understanding the principles of web development, benchmarks, and the basic components of web frameworks.

Winner: Flask

Employment Opportunities

Python developers are in high demand due to the increasing need for Python in major industries. Having expertise in Flask or Django, or both will boost your career prospects.

According to talent.com, the average Python Flask developer in the US earns $126,750 annually or $60.94 per hour. Most experienced programmers earn up to $171,000 annually, while entry-level roles start at $107,250.

The average Python Django developer’s salary is $120,000 a year or $57.69 an hour. Entry-level salaries begin at $100,000 a year, with the most experienced employees earning up to $152,655.

Winner: Flask

Features

Other than a few built-in capabilities, Flask relies primarily on extensions for its functionality. Whether it’s integrating databases or implementing more security measures, there’s an extension for almost everything you need.

Unlike Flask, Django comes packed with useful features plus a few available extensions. In terms of the variety of features, Flask comes ahead. But it’s always useful to have most of the needed features built into a framework, and, in that respect, Django takes the lead.

Database

Flask doesn’t place limits on how data is stored, and hence there is a wide range of available libraries and extensions specifically for that.

Django, on the other hand, has its own simple yet powerful ORM, which supports a range of relational databases such as SQLite, PostgreSQL, MariaDB, and Oracle. The ORM offers support for the generation and management of database migrations.

Authorization/Authentication

Most web applications require authorization and authentication. Flask provides support for only cookies-based sessions, but you can get extensions for account management, authorization, and authentication.

Unlike Flask, Django comes with the functions of authorization and authentication already built-in. It also comes with account management and support for sessions.

Admin

Flask doesn’t come with its own admin panel, which is a web application that provides a user interface for managing data based on your models. Instead, an extension is available, called Flask-Admin, that offers all this functionality and more.

Django here shines again as it comes with a functional admin panel that allows you to quickly perform CRUD operations against your model as you build up an application without requiring any extra code.

Routing and Views

Both Flask and Django allow you to map URLs to views. They also support function and class-based views.

For Flask, the Werkzeug extension implements URL routing. It also handles requests and responses from the application.

Django routes a URL pattern to a view by referencing a request object that contains the request information to invoke the required view.

Forms

In order to deal with forms, Flask integrates the Flask-WTF extension with WTForms instead. Subsequently, WTForms-Alchemy uses SQLAlchemy models to create forms.

By default, Django’s installation provides forms; that data models create using ModelForms, which handles data input and validation of clients and servers. These forms also deal with security issues such as CSRF, SQL injection, and XSS.

Template Engine

Flask uses Jinja2 as its template engine, while Django uses its own template engine to add data to an existing HTML page on your application. But Django can also use Jinja2. Both template engines have similarities in their syntax and features.

Performance and Speed

Being based on Werkzeug, Flask aims to be as simple as possible yet extensible to allow easy future expansions of the project. It’s this simplicity, flexibility and lightweight that allows developers to build small apps in shorter times.

For those looking to build more demanding projects rapidly and effortlessly, then Django would be a good fit. Django is able to deliver quick outcomes and smoothly take applications from concepts to completion.

So far, the performance race is tough. Nevertheless, Flask takes it home with its small requirements as you can build an entire project using half the number of code lines and fewer resource consumption with Flask than Django.

Winner: Flask

Scalability

Flask is scalable as it can process a large number of requests each day. The micro-framework modularizes the entire code and allows developers to work on independent chunks as the code base grows.

It’s common for Flask applications to be developed locally using the Werkzeug WSGI server but deployed publicly using a WSGI server like Gunicorn or uWSGI, with a robust server like Nginx as the public-facing proxy.

Django is a component-based framework that provides complete scalability options. Each layer of the developed app is independent, meaning you can scale the app at any level.

Django also uses load balancing and clustering for running the app across various servers. In other words, you can scale your web app without affecting the overall performance or loading times.

Django might be the better choice if you need to develop a highly scalable web application.

Winner: Django

Security

Flask comes with a few built-in security features, like CSRF protection. But there are several security extensions available for you to add.

Even though Flask has fewer coding requirements than Django, which makes it less susceptible to cyber threats, it’s still heavily reliant on third-party extensions, which means that an application’s security is only as strong as its weakest plugin.

This increases the responsibility placed on your development team to keep security up to date by assessing and keeping track of third-party libraries and extensions.

On the flip side, Django’s large codebase opens it to more malicious activities. That being said, Django is highly secure by default and includes plenty of integrated security tools such as scripts, user password hashing, CSRF tokens as well as authentication and authorization modules.

This prevents programmers from making common security mistakes and allows them to run a security checklist before deployment. Plus, the Django development team promptly and proactively reports any identified security flaws.

Therefore, Django is easier to secure upfront and maintain throughout the life of your app.

Winner: Django

Community Support

For a developer, it’s essential to have a solid user community for the framework you choose. These communities can offer you a great deal of assistance by responding to any queries you may have. They can also encourage the development of new framework-related applications.

Flask and Django both have large, knowledgeable, and passionate communities. Django has a larger group since it has been around for 5 years longer than Flask. But, despite being smaller, the Flask community is quite active.

Winner: Django

Conclusion

Với Django bạn sẽ có cái gì cũng nhiều: cộng đồng, tài liệu, hộ trợ … Django phù hợp với việc phát triển nhanh một ứng dụng web ở mọi cấp độ từ bé cho tới lớn. Tuy vậy, nếu bạn là new dev Python, Django không nên là sự lựa chọn.

Với Flask, bạn sẽ phải code rất nhiều. Nó phù hợp để bạn xây dựng những ứng dụng nhỏ hơn. Hay bạn muốn xây dựng theo hệ thống của riêng mình. Nếu bạn là new dev hãy đến với Flask. Tuy vậy, nên bạn muốn nghĩ là điều gì đó lớn lao bằng Flask, bạn cần thực sự

tay to

.

Với Pyramid, thanh niên này khá là kén người sử dụng. Nó như thằng nằm giữa Django và Flask. Nếu như Django là sự đầy đủ, Flask là nhanh, gọn nhẹ, thì Pyramid cũng xếp hàng nhanh, gọn, nhiều lib… Nhưng chắc với cách tiếp cận dẫn tới nó không được sử dụng nhiều.

Đây là đánh giá chủ quan của mình dựa một số tài liệu trên Internet và kinh nghiệm làm web bằng Python của mình. Nếu bạn có đóng góp vui lòng comment bên dưới.

Cảm ơn đã đọc tới đây!!

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Application Dispatching¶

Application dispatching is the process of combining multiple Flask applications on the WSGI level. You can combine not only Flask applications but any WSGI application. This would allow you to run a Django and a Flask application in the same interpreter side by side if you want. The usefulness of this depends on how the applications work internally.

The fundamental difference from Large Applications as Packages is that in this case you are running the same or different Flask applications that are entirely isolated from each other. They run different configurations and are dispatched on the WSGI level.

Features

Next, let’s compare Flask and Django based on the features that ship with the core frameworks.

Database

Django includes a simple yet powerful ORM (Object Relational Mapping) that supports a number of relational databases out-of-the-box: SQLite, PostgreSQL, MySQL, MariaDB, and Oracle. The ORM provides support for generating and managing database migrations. It’s also fairly easy to create forms, views, and templates based on the data models, which is perfect for your typical CRUD web application. While it does have some shortcomings, it’s good enough for the majority of web applications.

Flask makes no assumptions about how data is stored, but there are plenty of libraries and extensions available to help with that:

Use Library Extension
ORM SQLAlchemy Flask-SQLAlchemy
Migration tool for SQLAlchemy Alembic Flask-Alembic
ORM, Migrations Peewee Flask-Peewee
ORM PonyORM Flask-Pony
ODM (Object Document Mapper) PyMongo Flask-PyMongo
ODM MongoEngine Flask-MongoEngine

In conclusion, if you’re using a relational database, Django makes it much easier to get started since it has a built-in ORM and migration management tool. If, however, you’re using a non-relational database or would like to use a different ORM like SQLAlchemy, Django will fight you almost every step of the way. Plus, you’ll most likely not be able to take advantage of the Django admin, model forms, or DRF model serializers.

Flask stays out of your way, giving you the freedom to pick and chose the ORM (or ODM) that works best with your application. Freedom comes at a price, though: There’s a higher learning curve and more room for error since you’re managing these pieces yourself.

The more you do on your own the more mistakes you’ll make, especially as things scale.

Auth

Since most web applications require authentication (who are you?) and authorization (what are you allowed to do?), Django provides this functionality along with account management and support for sessions (via the User model) out-of-the-box. Flask provides support for cookie-based sessions, but you’ll have to turn to the extension network for account management, authentication, and authorization.

Use Extension
Account management, Authentication Flask-Login
Authorization Flask-Principal
Account management, Authentication, Authorization Flask-Security

Admin

Django comes with a functional admin panel, which is a web application that provides a user interface for managing data based on your models. This is another area where Django shines. It allows you to quickly perform CRUD operations against your models as you build out an application without writing any extra code. Again, Flask does not ship with anything like this, but the Flask-Admin extension offers all of the same functionality and a lot more:

Django does lots of things automatically.

Flask philosophy is slightly different — explicit is better than implicit. If something should be initialized, it should be initialized by the developer.

Flask-Admin follows this convention. It is up to you, as a developer, to tell Flask-Admin what should be displayed and how.

Sometimes this will require writing a bit of boilerplate code, but it will pay off in the future, especially if you have to implement some custom logic.

Flask-Admin supports a number of database backends, like SQLAlchemy, Peewee, MongoEngine, to name a few. You can add your own backends as well. It can also be used with (or without) the popular Flask auth extensions:

Routing and Views

Both frameworks allow you to map URLs to views and support function and class-based views.

Django

When a request matches a URL pattern, the request object, which holds the HTTP request information, is passed to a view and that view is then invoked. Anytime you need access to the request object, you must explicitly pass it around.

URLs and views are defined in separate files — urls.py and views.py, respectively.

Flask

At it its core, Flask uses Werkzeug, which provides URL routing and request/response handling.

The request object is global in Flask, so you can access it much easier (as long as you import it). URLs are generally defined along with the view (via a decorator), but they can be separated out into a centralized location similar to the Django pattern.

Did you take note of the difference in how Django and Flask both handle the request object? In general, Flask tends to be more explicit with things, but in this case it’s the opposite: Django forces you to explicitly pass around the request object while Flask’s request object is just magically available. This is one of the difficult parts with Flask, especially for those that are new to the framework coming from a similar style framework like Express.js.

Forms

Forms, another essential part of most web applications, come packaged with Django. This includes input handling and client and server-side validation along with the handling of various security concerns like cross-site request forgery (CSRF), cross-site scripting (XSS), and SQL injection. They can be created from the data models (via ModelForms) and integrate well with the admin panel.

Flask doesn’t support forms by default, but the powerful Flask-WTF extension integrates Flask with WTForms. WTForms-Alchemy can be used to automatically create forms based on SQLAlchemy models, bridging the gap between forms and the ORM much like Django’s ModelForm.

Reusable Components

With regard to project structure, as your apps get more complicated, both frameworks make it easy for you to break them up by grouping related files together that exhibit similar functionality. So, you could, for example, group all user-related functionality together, which can include the routes, views, forms, templates, and static assets.

Django has a concept of an app while Flask has blueprints.

Django apps are more complex than Flask blueprints, but they tend to be easier to work with and re-use once setup. Plus, due to the urls.py, models.py, and views.py convention — consistent project structure! — you can add new developers to a Django project fairly easily. Blueprints, meanwhile, are simpler and easier to get up and running.

Templates and Static Files

Template engines allow you to dynamically inject information onto an HTML page from the backend. Flask uses Jinja2 by default while Django has its own templating engine. They’re fairly similar in terms of syntax and feature sets. You can also use Jinja2 with Django.

Both frameworks have static file handling support as well:

Django comes with a handy management command for collecting all static files and placing them in a central location for production deployments.

Asynchronous Views

Django supports asynchronous handlers with the introduction of Django 3.1. A view can be made asynchronous by using the keyword

async

. The async support is available to middlewares also. If you need to make a synchronous call inside an async view, you can use the sync_to_async function/decorator. This can be used to interact with other parts of Django that don’t support async yet, like the ORM and cache layer.

Asynchronous web servers, including, but not limited to, Daphne, Hypercorn, Uvicorn, should be used with Django to leverage the full power of asynchronous views.

Flask 2.0 added built-in support for asynchronous routes/views, error handlers, before and after request functions, and teardown callbacks!

For more on asynchronous views in Django and Flask, check out the Async Views in Django and Async in Flask 2.0 articles, respectively.

Testing

Both frameworks have in-built support for testing.

For unit testing, they both leverage Python’s unittest framework. Each of them also support a test client that you can send requests to and then inspect and validate parts of the response.

See Testing Flask Applications and Testing in Django respectively for more info.

In terms of extensions, if you like how the unittest framework works, check out Flask-Testing. On the other hand, the pytest-flask extension adds pytest support to Flask. For Django, check out pytest-django.

Other Features

There are several other features not already mentioned that come with Django but not Flask:

Django Flask Extension / Resource
Atom and RSS feeds Atom RSS Feed Generator with Python and Flask
Caching framework Flask-Caching
Bootstrapping tool Flask-AppBuilder, CLI
Sitemaps Flask-Sitemap

Flexibility

Django based on MVT, nó khá giống với MVC. Sau khi startproject bạn sẽ có một cái khung. Django hỗ trợ ORM, Admin interface, dễ dàng chuyển qua lại giữa các database engine một cách dễ dàng. Django cung cấp gần như đầy đủ hết tất cả các function cho phép bạn xấy dụng ứng dụng web Python bao gồm web interface, database operations, admin functions, …

Flask không MVC mà nó định hướng cho kiểu ứng dụng

out-of-the-box

. Bạn có thể xây dụng bất kể khung gì bạn muốn. Tức là bạn sẽ phải code nhiều hơn Django. Để giúp bạn tự mình xây dụng một hệ thống web, Flask cũng có rất nhiều các lib , extension, add-ons hỗ trợ: Flask-Migrate, Flask-SQLAlchemy, Flask-WTF … và 2 cái tên đình đám là Werkzeug WSGI toolkit and Jinja2 template engine.

Pyramid giống Django là based on MVC. Nó tực sự là tuyệt vời khi xét về tính

Flexibility

. Nó bao gồm: template rendering system, connecting database, mapping urls to views, authentication system…

Advantages of Django

Here, are pros/benefits of Django framework:

  • Django is easy to set up and run
  • It provides an easy to use interface for various administrative activities.
  • It offers multilingual websites by using its built-in internationalization system
  • Django allows end-to-end application testing
  • Allows you to document your API with an HTML output
  • REST Framework has rich support for several authentication protocols
  • It is used for rate-limiting API requests from a single user.
  • Helps you to define patterns for the URLs in your application
  • Offers built-in authentication system
  • Cache framework comes with multiple cache mechanisms.
  • High-level framework for rapid web development
  • A complete stack of tools
  • Data modelled with Python classes

Django vs Flask

Flask is a lightweight micro-framework ideal for simple, extensible web apps, while Django is a full-featured framework best for scalable, feature-rich projects. Flask offers flexibility and a “build from scratch” approach, while Django comes with many built-in tools for rapid development. Both are excellent, but their suitability depends on project needs.

Django vs Flask: Head-to-Head

There’s no doubt that Django and Flask are both popular web frameworks, as shown by their ability to wrestle their way into the top 15 frameworks in the latest Stack Overflow developer survey, and that’s despite the overwhelming number of JavaScript frameworks that tend to dominate the web development space.

Django & Flask are Top 15 Frameworks: Stack Overflow Developer Survey

Now we know that these two Python frameworks are popular among web developers, let’s figure out the difference between Django and Flask in our Flask Django comparison table.

Django

Flask

Launch Year

2005

2010

Architecture

Model View Template (MVT)

Wrapper for WSGI

Framework Type

Full-stack

Micro-framework

Working Style

Monolithic

Diversified

Flexibility

Low

High

Companies Using It

Spotify, Instagram, Dropbox, Pinterest, Mozilla, YouTube, NASA, National Geographic

Netflix, Reddit, Uber, Lyft, Zillow, Patreon, Airbnb, MIT

GitHub Stars

68.4k

61.7k

Open-Source

Yes

Yes

API Support

No

Yes

Database Support

Built-in ORM & support for SQLite, PostgreSQL, MySQL, MariaDB, and Oracle

Relies on SQLAlchemy or other extensions for ORM

Bootstrapping Tool

Yes (Django-admin)

No

Template Engine

Django Template Language (DTL)

Jinja2

Authorization

Account management & sessions

Cookies

Multi-Page Apps

Yes

No (Single-Page Only)

Dynamic HTML

Yes

No

Third-Party App Support

Yes

No

Virtual Debugger

No

Yes

Testing Support

Yes (unittest)

Yes (unittest)

Forms

Built-in

Requires Flask-WTF extension

URL Dispatcher

Controller RegEx

RESTful

Difference Between Flask and Django

Flask and Django are the two most popular Python- frameworks. Here are some important difference between Django and Flask.

Flask Django
Created in 2010 Created in 2005
Python web framework built for rapid development. Python web framework built for easy and simple projects.
Flask is WSGI framework. Django is a Full Stack Web Framework.
Flask provides support for API. Django doesn’t have any support for API.
Support Visual Debug. No support for Visual Debug.
Flask allows you to use multiple types of databases. Django doesn’t offer multiple types of databases.
Flask has no default support for forms, but you can use WTForms to fill the gap. Django comes Form with which can be integrate with the ORM and the admin site.
Flask does not offer dynamic HTML pages. Django offers dynamic HTML pages.
The request based object is imported from the flask module, which is a global variable in Flask. All views are set as an individual parameter in the Django.
Flask is much younger platform compared to Django. Django is a very mature framework.
Flask offers a diversified working style. Django offers a Monolithic working style.
It supports an extension which could be implemented in the framework. Django has its own module library. So, it stores several prewritten codes.
The structure of the project layout for Flask web framework is random. The structure of the project layout for the Django is conventional.
Flask web framework uses a Jinja2 template design. Django web framework helps you to utilizes the View web templating system.
URL dispatcher of the Flask web framework is a RESTful request. URL dispatcher of this Django framework is based on controller-regex.
Flask does not offer a built-in bootstrapping tool. Django-admin enables developers to start building web applications without any external input.
Flask is a good choice if you want a lightweight codebase. The best feature of Django is Robust documentation.
Flask framework is suitable for single application. Django framework allows developers to divide a project into multiple page application.
Flask Web Framework doesn’t offer support for third-party applications. Django Web Framework supports a large number of third-party applications.
Git hub stars 48.8 K Git hub stars 47.1 K
Best features of the flask is it is lightweight, open source, and offer minimal coding for developing an application. The best features of Django are Rapid development, Open source, Great Community, Easy to learn.
Famous companies using Flask are: Netflix, Reddit, Lyft, MIT Famous companies using Django are Instagram, Coursera, Udemy.

Hiring

Despite both Python and Django’s popularity, it’s hard to hire Django developers. They’re difficult to find and retain since they’re in such high demand, and they’re typically more on the senior side so they can be quite expensive. There’s also not a lot of new, aspiring web developers learning Django since the industry is focused more on smaller frameworks and the framework itself is difficult to learn.

  1. Industry trends: Because of the rise of microservices, aspiring web developers are typically learning the smaller, lighter weight frameworks. Plus, more and more web developers are picking JavaScript, over Python or Ruby, as their first language due to the popularity of client-side JavaScript frameworks — Angular, React, and Vue.
  2. Difficult to learn: There’s a surprising lack of beginner-friendly Django tutorials. Even the Django documentation, which is incredibly comprehensive, and the infamous polls tutorial are not designed for beginners.

Flask can be difficult to hire for too, but it tends to be easier than Django since it’s a light weight framework with fewer abstraction layers. A strong developer with experience in a similar framework in a different language, like Express.js or Sinatra, can get up to speed with a Flask app fairly quickly. When hiring such developers, focus your search on those that understand design patterns and fundamental software principles rather than the languages or frameworks they know.

Frequently Asked Questions

Is Flask Easier Than Django?

Most people find Flask easier to learn than Django as it offers greater flexibility and a less rigid working style. But while Django has a steeper learning curve, it can pay off if you build secure and scalable web apps that will grow in complexity.

Should I Learn Django or Flask First?

There’s no correct answer here. If you’re new to Python, you may find it easier to learn Flask before Django. Once you have the fundamentals, you’ll find it easier to transition to Django later. On the other hand, if you’re more experienced in Python or web development, you might prefer to dive right into Django.

Django vs Flask: Which Is Better?

Neither is better or worse than the other, but they may be better suited to specific use cases. For example, Flask is suitable for smaller projects that need the flexibility to add particular libraries both now and in the future. Django is great for large projects that require security, scalability, and built-in features.

Which Is Better? Flask or Django For Beginners?

If you’re a beginner in Python or web development, you’ll likely find that Flask is a more accessible place to start, as it’s much quicker to get your project off the ground due to a smaller codebase and a less steep learning curve.

People are also reading:

Django and Flask are two of the most popular web frameworks for Python. Flask showed up as an alternative to Django, as designers needed to have more flexibility that would permit them to decide how they want to implement things, while on the other hand, Django does not permit the alteration of their modules to such a degree. Flask is truly so straightforward and direct that working in it permits an experienced Python designer to make ventures inside truly tight timeframes.

Introduction to Django

Django is commonly called a “batteries-included” system approach—or the “framework for fussbudgets with deadlines.” This implies that Django makes it simple for Python designers to jump into web applications rapidly without requiring planning into the app’s framework ahead of time. Essentially, construct superior web apps, more rapidly, with less code. Django is set up, has great documentation, and has a huge online community.

Here are a few Django use cases

Django is incredible for building complex destinations with energetic substance, with adaptability in intellect; enormous ventures that require out-of-the-box arrangements can be sent truly quickly. Flask is idealized for creating straightforward web apps Django permits sending more complicated web apps quicker, as its modules are preconfigured to supply quick app improvement and arrangement.

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Flexibility

Flask, by design, is much more flexible than Django, and it’s meant to be extended. Because of this, Flask generally takes longer to set up since you’ll have to add the appropriate extensions based on business needs — e.g., ORM, permissions, authentication, and so forth. This upfront cost results in more flexibility down the road for applications that don’t fit the standard Django model.

Be careful with this, though. Flexibility gives developers more freedom and control, but this can slow down development especially for larger teams since a lot more decisions need to made.

Developers love having the freedom to do whatever they want to solve a problem. Since Flask doesn’t provide many constraints or opinions on how an app is developed, developer’s get to introduce their own. The result is that two Flask apps that are functionally interchangeable compared side-by-side will often be structured differently. Thus, you need a more mature team that understands design patterns, scalability, and the importance of testing to handle such flexibility.

Keywords searched by users: python django and flask

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