Python Developer Courses

Essentially because it doesn’t rely on other tools or programming libraries in order to function. At just over 11 years old, Flask is roughly the same age as the more famous Python web framework, Django. In fact, there are so many advantages of learning and using Python for web development.

For more information on how to write an installable Python distribution, check out the docs on A good way to get moving is to turn the codebase into an installable Python distribution. At the project’s root, create and a directory called todo to hold the source code. The method should be restarted manually for any change in the code. To overcome this, the debug support is enabled so as to track any error.

from flask import Flask, render_template

If you change databases or don’t want your database URL visible in source control, you’ll have to take extra steps to ensure your information is appropriate for the environment. Note that a wide variety of SQL database management systems can be used with flask-sqlalchemy, as long as the DBMS has an intermediary that follows the DBAPI-2 standard. In this example, I’ll use PostgreSQL (mainly because I’ve used it a lot), so the intermediary to talk to the Postgres database is the psycopg2 package. Make sure psycopg2 is installed in your environment and include it in the list of required packages in You don’t have to do anything else with it; flask-sqlalchemy will recognize Postgres from the database URL. While the code example above represents a complete Flask application, it doesn’t do anything interesting.

  • You pass the value ‘/’ to @app.route() to signify that this function will respond to web requests for the URL /, which is the main URL.
  • It’s used to set up pieces of the application required for extended functionality, e.g., a database connection and help with authentication.
  • You’ll define a model that will live in the database by inheriting from the db.Model object and define the attributes of those models as db.Column instances.
  • To explain what this means, let’s look at the code it corresponds to.
  • Size is everything, and Flask’s status as a microframework means that you can use it to grow a tech project such as a web app incredibly quickly.

The simple answer to these questions is that Flask Python is a web framework utilized to build web applications. A majority of the world’s companies now use web apps in one way or another to enhance the quality of their products and offerings by making it very convenient for the shopper or the customer. Flask Python is one of the most renowned web development frameworks that is being widely used today. Python, as always brings its easy-to-use and powerful runtime environment to complement the capabilities of Flask. Another key difference for developers working with databases is how much support Django and Flask provide for that, chiefly ORM. Object Relational Management allows the API to access data easily, without having to write SQL commands.

Extensions, Plug-ins and Related Libraries &

In this step, you’ll create your main Flask application in a new file. You’ve run your application and displayed information on the web browser. Introductory Flask courses can last around 12 weeks, while more advanced courses stretch on longer. For a professional certification, learners may have to enroll in a course for as long as six months.

Is Python Flask easy to learn?

Flask is a micro web framework that is written in Python. Flask is very easy to learn, and also its implementation is straightforward. In just a few lines of code, you can get started with this. Flask is used in top tech companies also like: Netflix, Reddit, Mozilla, and so on.

After learning the basics, you will also learn about the Jinja template to create dynamic websites using Flask with minimal code. One of the most notable of them is Flask, which is known for its simplicity and ease of learning. Flask has chosen an alternate way, it only provides what is essential and lets you bring in extras you want.

Advantages and disadvantages of Flask

Inevitably there are some downsides to this microframework’s lightweight nature. Chief among them is that unlike Django, Flask lacks a large toolbox. This means that developers will have to manually add extensions such as libraries. And, if you add a huge number of extensions, it may start to slow down the app itself due to a multitude of requests. Like Django, being able to find your way around easily is key for allowing web developers to concentrate on just coding quickly, without getting bogged down. At its core, the microframework is easy to understand for web developers, not just saving them time and effort but also giving them more control over their code and what is possible.

  • Once you learn Flask, you’ll develop secure web applications in your own fashion, without it necessarily enforcing dependencies on you, or basically telling you how your application should look like.
  • Explaining how they go about doing that will take a little more unraveling.
  • You’ll run it nonetheless so you’re familiar with this commonly encountered exception.
  • Stop the development server in your other terminal that runs the hello application with CTRL+C.
  • Flask uses the Jinja template engine to dynamically build HTML pages using familiar Python concepts such as variables, loops, lists, and so on.

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