Answer 1

Paul Jacobs what Doniyorbek Urinboyev suggested is better because they don't need internet.

Answer 2

Paul Jacobs same

Answer 3

I use "pyonic python 3 interpreter"

Answer 4

It is true. But actually I use both, the Sololearn playground and qpython3.

Answer 5

You can also use the Sololearn playground.