How can we do complete programming in python? Which program we need to install?

Question

I want to know how to write a python program on computer. and how I can save a python file.

Answer 1

Use this:
https://www.python.org/downloads/

Answer 2

PyCharm is a good IDE for Python.

Answer 3

you don't need to install any other program.
sololearn has code playground for python

Answer 4

Sahil Danayak Thanx for urs reply bro, but I was asking for using on Windows 7 OS.