when we use phython?

Answer 1

Alwaysss 🐍
Scripting, network operations, web framework, web scraping, web crawling, web parsing, text parsing, text recognition, image recognition, speech recognition, machine learning, deep learning, neural networks, artificial intelligence, data science, big data, data handling, database operations, data analysis, data visualization, graphics, 2D/3D, games, applications, Android, Linux, Windows...

The [,] goes on...

Answer 2

When we need to make apps...games...AI etc

Answer 3

It's on your interest. May it be data analysis, gaming or just for fun coding.