An Introduction to Python Flask Framework for Beginners

Flask is based on the Werkzeg WSGI toolkit and the Jinja2 template engine.Both are Pocco projects. Flask’s success created a lot of additional work in issue tickets and pull requests. Armin eventually createdThe Pallets Projects collection of open source code libraries after he had been managing Flask under his own GitHub account for several years. The Pallets Project now serves as the community-driven organization that handles Flask and other related Python libraries such as Lektor, Jinja and several others. If something is “monolithic,” it means as the application becomes more complex, the model file can get very large. If your goal is to make a minimum viable product, Django’s robust MTV system can help you deploy quickly in web development.

  • Your product may be one thing in the beginning and something else entirely after three months of development.
  • The framework’s agile development process focuses solely on delivering quality in a timely and efficient manner.
  • For more information on Flask and other web development frameworks, check out our web development tutorials page.
  • Most examples remove it for brevity, but you should always be mindful of how you’re accessing untrusted data.
  • Django applications are complex than Flask blueprints but tend to be easy and easy to use once you’ve successfully set them up.
  • This is used instead of jsonify, as jsonify constructs an actual response object using its input as the response body.
  • In this step, you’ll activate your Python environment and install Flask using the pip package installer.

Flask’s core is simple with number of extensions which blends with it. In addition to frameworks like Django and Flask, there are Python tools and libraries that will make life easier for you as a web developer or a data scientist. Below are some tools to experiment with as you delve deeper into Python programming and get comfortable with your tech stack. Which framework is a better fit for you depends on your working style. Considering the downtrend in usage of Python for web Development, it is predictable that the popularity of frameworks such as Flask and Django also declined .

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The Web Server Gateway Interface has been used as a standard for Python web application development. WSGI is the specification of a common interface between web servers and web applications. There are many open source projects that rely on Flask to operate.

Full stack developers are in high demand because of their ability to contribute across the board. This is a great opportunity to further explore both sides of development, which in turn can make you a more generously compensated developer. The CherryPy framework, which is over ten years old, has proven itself to be an exceptionally fast and stable product.

Why is Flask called a micro-framework?

You’ll also want to install flask-sqlalchemy so your Flask application has a simple way to talk to a SQL database. Each framework has a different way to put together its routes, models, views, database interaction, and overall application configuration. I’ll describe those aspects of each framework in this series, which will begin with Flask. It’s a very valuable skill if you’re hoping to land a developer position.

As is most often the case, your choice of Python framework depends almost entirely on the specific business context of your company. Most of our clients tend to lean more toward Django, and they’re right to do so. They don’t suggest Flask too often, since Django requires fewer decisions from them, making it easier for their project to change hands if they decide to move their development back in-house. When you first talk to a software agency like STX Next, there’s a good chance neither you nor them will know which technologies your product is going to need. Supporting many libraries can be a major disadvantage of Flask. When you have multiple libraries integrated into a large product, some of them don’t stay on the market and lose support over time.

Open the file to make the following modifications:

And, if you add a huge number of extensions, it may start to slow down the app itself due to a multitude of requests. Flask does not support databases particularly which is great, as you have many database options to choose from. With the help of flask extensions, the database will integrate with applications. As flask is an open source python platform, people generally prefer open source database options like SQLite, MongoDB or PostgreSQL. With Django, you get a full-stack web framework with a ‘batteries included’ approach that’s excellent for large projects that require security and scalability.

Do companies use Python Flask?

Companies that are using Flask: MIT, Uber, Reddit, Netflix, Mozilla, Airbnb, Lyft, etc.

Before you start proceeding with this tutorial, we are assuming that you have hands-on experience on HTML and Python. If you are not well aware of these concepts, then we will suggest you to go through our short tutorials on HTML and Python. DevOpsChangelogWhat Full Stack MeansAbout the AuthorFuture flask framework for python developers DirectionsPage Statuses…or view the full table of contents. Cookiecutter Flask is a project template for use withCookiecutter. Dynamic Secret Generation with Vault and Flask looks at how to use Hashicorp’s Vault and Consul to create dynamic Postgres credentials for a Flask web app.

How do I begin using Flask?

Learn how these parts fit together in the web development chapter or view all topics. So one con of Flask may be having to DIY if you’re new to programming. Designing and installing the different components you want in your Flask framework means investing a lot of time upfront to do your research. If you’re a beginner or you’re not interested in manually configuring your framework, the time-sink may not be worth it for you. If Django is like a set meal, Flask is more like ordering a la carte. Instead of being presented with a readily determined appetizer, main course, and dessert, Flask allows you to pick what you want for each part of the meal.

  • In the latter case, what you may not know, though, is how you’re going to approach this planned future growth.
  • This makes it great for building applications that require super performance with I/O operations and support for a huge number of simultaneous connections.
  • However, Flask vs Django are both famous, but it’s hard to hire a Django developer with complete knowledge to deal with the bugs and development concerns.
  • Similar views could be constructed for listing, editing, and deleting tasks, but this example offers an idea of how it could be done.
  • It is used to store the session of a Flask application in a cookie without allowing users to tamper with the session contents.
  • You don’t have to get fancy with it; you just need something to recognize what tables are to be created and some code to create them .