Python Modules
Python is a versatile and powerful programming language that offers a wide range of tools and libraries to simplify complex tasks. One of the key features that make Python so popular among developers is its modular nature. Python modules are essential components that enable programmers to organize their code into reusable and organized packages, making code development and maintenance more manageable.
In Python, a module is a file containing Python statements and definitions. These files can contain Python functions, classes, and variables. Modules are designed to promote code reusability, allowing you to split your code into smaller, more manageable pieces. Each module can be imported into other Python scripts, providing access to its functions and variables.
 In the below PDF we discuss about Modules in Python in detail in simple language, Hope this will help in better understanding.
Creating Python Modules:
Creating a Python module is straightforward. You can create a new Python file with a .py extension and start defining functions, classes, and variables in it. For example, let’s create a simple module named “math_operations.py” that contains some basic mathematical operations:
# math_operations.py
def add(x, y):
return x + y
def subtract(x, y):
return x - y
def multiply(x, y):
return x * y
def divide(x, y):
if y == 0:
return "Cannot divide by zero"
return x / y
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Using Python Modules:
Once you’ve created a module, you can use it in other Python scripts by importing it. Importing a module allows you to access its functions and variables. To use the “math_operations.py” module created earlier, you can import it in another script like this:
# main.py
import math_operations
result_add = math_operations.add(5, 3)
result_subtract = math_operations.subtract(10, 4)
print("Addition:", result_add)
print("Subtraction:", result_subtract)
When you run the “main.py” script, it will import the “math_operations” module and use the functions defined in it.
Related Question
A Python module is a file containing Python code that can include functions, variables, and classes. It helps in organizing code by breaking it into reusable and logically grouped components.
To create a Python module, you simply create a .py file with Python code inside it. For example, you can create a module named “my_module.py” by creating a file with that name and adding your code to it.
You can install third-party Python modules using package managers like pip. For example, to install a module called “requests,” you can run pip install requests. Once installed, you can import and use the module in your Python code.
Yes, Python has several built-in modules that are available without the need for external installation. Examples include math, os, sys, and random, among others.
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