Importing a module

In python, in order to use a module, it has to be imported. Python provides multiple ways to import modules in a program : 
 

1. To import the entire module : 

import module_name

1. To import only a certain portion of the module : 

from module_name import object_name

1. To import all the objects of the module : 

from module_name import *

A library refers to a collection of modules that together cater to a specific type of needs or application. Module is a file(.py file) containing variables, class definitions statements, and functions related to a particular task. Python modules that come preloaded with Python are called standard library modules.