The usage

Question

When do we totally use input function?

Answer 1

When you write a console-based application and want to ask the user for input.

Answer 2

aryan shahrabi The input function on SoloLearn is before you execute the program so if you have 15 to 30 inputs they all have to be entered before executing the program not as you go along elsewhere.
An alternative can be executed via Skulpt or Brython which if done correctly allows for individual inputs.