How to perform simple operations in Linux terminal

Question

>>> 2+2
4

Answer 1

You also can try to write a .py file, write some code, and input 'python3 <your file name>.py' to run your code.

Answer 2

python is preinstalled on all unix-like systems. Thus you can simply type 'python' in your commandline and thereby open the python shell.

Alternatively can you save your python-program to a .py file in a texteditor of your choice (atom, sublime, vim etc). Now you have to navigate to the file location via the 'cd' command in your commandline and run the program with the command 'python <your_file_name>.py'

On Windows python is not preinstalled and must thus be installed manually. The executable file can be found on the official Python homepage.

Answer 3

open terminal, input 'python' or 'python3'