Answer 1

Python is an interpreted, interactive, object-oriented programming language. It incorporates modules, exceptions, dynamic typing, very high level dynamic data types, and classes. Python combines remarkable power with very clear syntax. It has interfaces to many system calls and libraries, as well as to various window systems, and is extensible in C or C++. It is also usable as an extension language for applications that need a programmable interface. Finally, Python is portable: it runs on many Unix variants, on the Mac, and on Windows 2000 and later.
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Python is a high-level programming language, with applications in numerous areas, including web programming, scripting, scientific computing, and artificial intelligence.
It is very popular and used by organizations such as Google, NASA, the CIA, Disney, Pinterest, Instagram, National Geographic, Mozilla Firefox, and the Washington Post.
You can easily build a responsive website by Django, it's a very rich web framework of Python.
Django has Django-Responsive.
 Django-responsive a utility application for building responsive websites in Django. This tool is meant to complement the use of CSS media queries and help solve problems with fixed width elements such as advertisements or embedded video.
For this you have to learn Python 3, Django and HTML.
Learning Python is very helpful for today's reality, which will open doors for Data Science, Artificial Intelligence and many more.
Here are a lot of examples of using Python:
https://en.wikipedia.org/wiki/List_of_Python_software?wprov=sfla1