Answer 1

django is the framework.
Also flask but I don't think it used anymore...
If you want to build a website with python check for tutorials on the internet.
Serch on YouTube for tutorials(I found them the most detailed and useful)

Answer 2

Most Used Frameworks
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1.Django
Flask

Answer 3

i advice u to start of with flask if u have never build a back-end server as it will help u understand a lot. But if ur more advanced and already have knowledge of back-end, i say learn Django as it's more advanced and efficient for fast development also there's one more popular small and fast framework for building fast data server but i can't remember the name off the top of my head

Answer 4

Django: https://www.simpleisbetterthancomplex.com