which module is used to implement the modules in python code example

Example 1: python module

Simply, a module is a file consisting of Python code. A module can 
define functions, classes and variables. A module can also include 
runnable code that you can call with abitrary names attached to them.

Example 2: importing modules with package in python

from pakage_name.module_name import function_name
# now we can directly use function

##################################  OR  ########################################

from pakage_name import module_name
# now we have to use module_name.function_name