This development server should not be used in a production deployment. See the Deployment Options page on the Flask documentation for more information, you can also check out this Flask deployment tutorial. With instruction from online Flask courses, you can build intuitive websites for yourself or pursue a career in web development. Flask skills are transferable to a number of web developer and computer science roles, including Flask developer, Python developer, and data scientist. For example, a Flask developer’s duties may include creating and implementing web applications using Flask, writing front-end and back-end code, and testing sites to ensure smooth operations. Flask offers developers a simpler, user-friendly alternative to the Django full-stack framework.

  • Using Flask and popular extensions Flask-RESTful, Flask-JWT, and Flask-SQLAlchemy we will dive right into developing complete, solid, production-ready REST APIs.
  • You’ll run it nonetheless so you’re familiar with this commonly encountered exception.
  • You will learn how to use Python and the Flask framework to build a backend for interactive web apps.

Simplify deploying Flask applications with DigitalOcean App Platform. 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. Many Flask programs allow learners to progress at their own pace, so they can spend extra time on challenging concepts. Online certifications can expand your knowledge and display your mastery of the Flask micro-framework and other Python frameworks.

Build a Code Image Generator With Python

Rather than instilling specific dependencies and layouts, Flask provides users with helpful development suggestions.Footnote 6 Whether you’re writing “Hello, World! ” code or rendering web pages, Flask is flexible and lightweight. This gives beginners the guidance they need to explore the world of web development and room to scale as their skills grow. Create Your First Web App with Python and Flask
In this course, you’ll learn the basics of web application development with Python and Flask. It covers using WTForms and SQLAlchemy in Flask applications, working with templates, and using SQLite with Flask.

  • If you click this line, the debugger will reveal more code so that you have more context to help you solve the problem.
  • Both the folder and the file do not yet exist, you will get an error if you were to run the application at this point.
  • You will be able to learn and understand how to design and implement RESTful API’s via the Flask framework.

This ensures that the URLs formed are unique and based on precedents laid down by Apache. 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. Stop the development server in your other terminal that runs the hello application with CTRL+C. In this step, you’ll create your main Flask application in a new file. If you are using Git, it is a good idea to ignore the newly created env directory in your .gitignore file to avoid tracking files not related to the project.

Flask by Example – Updating the UI

With this you can access the word passed through the URL and respond with a capitalized version of it using the capitalize() method in Python. Flask uses the Jinja template engine to dynamically build HTML pages using familiar Python concepts such as variables, loops, lists, and so on. Before tackling this web framework, Flask learners should be familiar with programming and web development fundamentals gained through a background or introductory course in computer science. They should have a strong interest in web development, as well as sharp analytical skills. It can also be a good idea to have some knowledge of Python’s basic structure and common commands. Though these courses can help beginners learn Flask, it’s important to note that they do not automatically qualify someone for a Flask developer position.

You’ll use routing to display various web pages that serve different purposes in your web application. You’ll also use view functions to allow users to interact with the application through dynamic routes. Flask is a small and lightweight Python web framework that provides useful tools and features that make creating web applications in Python easier.

Then add the following tag after the tag and directly before the % endblock % line:

In this step, you’ll make a small web application inside a Python file and run it to start the server, which will display some information on the browser. When developing a web application, you will frequently run into situations where the application displays an error instead of the behavior you expect. You may misspell a variable or forget to define or import a function. To make fixing these problems easier, Flask provides a debugger when running the application in development mode.

Advanced Python Web Dev Using Flask Lessons

You will then apply the concepts to create your first web application with Python and Flask. When the home page of the webserver is opened in the browser, the output of this function will be rendered Advanced Python Web Dev Using Flask Lessons accordingly. We guarantee that all our online courses will meet or exceed your expectations. If you are not 100% satisfied with a course – for any reason at all – simply request a full refund.


We’ll start with a Python refresher that will take you from the very basics to some of the most advanced features of Python — for you to never be lost or confused. This project-based course is a detailed guide to web application development using the increasingly popular Flask framework. Here, you will learn the basics of web application development with Python using the Flask framework. Flask is a microframework of Python that is used to build web applications.

Advanced Python Web Dev Using Flask Lessons

By Richard