Python Modules: Understanding, Importing, Creating Custom Modules, and Exploring math, os, and random Modules

 Modules in Python

• A module in Python is a file containing Python definitions and statements. It allows you to organize your code into reusable components.

Syntax:

# Importing a module

import module_name

Example:

Importing Modules

• Importing modules makes functions, variables, and classes defined in them available for use in your program.

Syntax:

import module_name

Example:

What is a Custom Module?

• A custom module is simply a Python file (ending in .py) that contains functions, variables, or classes that you create. This allows you to organize your code into separate files and reuse them easily.

Steps to Create and Use a Custom Module:

1. Create a Python File (Module) :

• First, create a Python file (e.g., my_module.py) where you define your functions or variables.

Example (my_module.py):

2. Use the Custom Module in Another Python File :

• Now, you can use the functions or variables defined in my_module.py by importing it into another Python file.

Example (main.py):

3. math Module

• The math module provides mathematical functions, like trigonometric operations, logarithmic functions, etc.

Syntax:

import math

Example:

4. os Module

• The os module provides functions to interact with the operating system, like working with file systems, directories, and processes.

Syntax:

import os

Example:

5. random Module

• The random module is used to generate random numbers, select random items from a list, and more.

Syntax:

import random

Example: