How to import modules in Python

Modules

Python modules makes programming a lot easier.

It’s basically a file that consist of already written code.

When Python imports a module, it first checks the module registry (sys.modules)
to see if the module is already imported.

If that’s the case, Python uses the existing module object as is.

• Command line arguments (sys.argv)
• How To Use sys.arv in Python
• Python Programming – Python Modules

Importing Modules

There are different ways to import a module

import sys 
# access module, after this you can use sys.name to refer to
# things defined in module sys.

from sys import stdout 
# access module without qualifying name. 
# This reads >> from the module "sys" import "stdout", so that
# we would be able to refer "stdout" in our program.

from sys import * 
# access all functions/classes in the sys module.