Meet Python Command Line Intepreter!

Python is not a compiled language like C, C++ or Java. It does not need to be compiled into executable before you run it.

Python is a interpreted language.

% python3

import this

>>> 2+2
4
>>> print( "Hello World!" )
Hello World!
>>> a = 1
>>> b = 2
>>> a+b
3
>>> exit()

## or key in Ctrl-D