Python OOPs

Python SQLite

Examples

Others

Python OOPs

Python SQLite

Examples

Others



Python Modules


A module in Python is a file containing Python code (functions, classes, and variables) that you can reuse in other programs. Modules help organize code into smaller, manageable, and reusable components.

Create and Using a Module

1. Create a Module

To create the model for save your python code in a .py file. for example, create a file named my_module.py:

Example 
# my_module.py
def greet(name):
    return f"Hello, {name}!"

def add(a, b):
    return a + b

2. Import the Module

To import a module in Python, you can use the import keyword.

Example 
import my_module
print(my_module.greet("Gokul"))  # Hello, Gokul!
print(my_module.add(8, 7))       # 15

Output

Hello, Gokul!
15

3. Import specific functions, variables, or classes

In Python modules, the from ... import ... statement allows you to import specific functions, variables, or classes directly from a module instead of importing the entire module. This approach can make your code cleaner and more focused, as you only include the elements you need.

Example 
from my_module import greet

print(greet("Krish"))  # Hello, Krish!

Output

Hello, Krish!

4. Built-in Modules

Python comes with a rich library of built-in modules that provide functionality out of the box. These modules are part of Python's standard library and don't require additional installation. The math function provides mathematical functions.

Example 
# importing built-in module math
import math

# using square root(sqrt) function  
# in math module
print(math.sqrt(400)) 

# 1 * 2 * 3 * 4 * 5 = 120
print(math.factorial(5))  

# importing built in module random
import random

# printing random integer between 0 and 5
print(random.randint(0, 20))  
 

# importing built in module datetime

import time

# Returns the number of seconds 
print(time.time())

Output

20.0
120
5
1735890342.719479