How Python is helpful in web development or it's not ?

Answer 1

Flask is another framework for Python, have a look with those links:

https://www.djangoproject.com/

http://flask.pocoo.org/

Some surveys reveal a lot of French Python devs use Python to frontend goals.

Answer 2

As you know choosing a programming language for your product is a major challenge. It’s a big decision. 
Python continues to be one of the most popular languages. According to (tiobe), Python is ranked among the top programming languages.(BuiltWith) states that there are almost a million websites that use Python

Django is a free, open-source, full-stack web application framework written in Python. In simple words, Django is a set of ready-made components that help you rapidly build websites with pragmatic and clean architectures. When crafting websites, developers frequently need the same components for tasks like authenticating users, uploading files, and implementing CMS systems. So as not to reinvent the wheel each time you make a new site, Django provides ready-made solutions.