Module in Python

A module is a file containing Python definitions and statements. It can contain functions, classes, variables, and runnable code. In Python, a module allows you to organize your code into separate files for better structure, readability, and maintainability.

Key Concepts:

• Importing a module: To use the code in a module, you can import it using the import statement:

import module_name

Alternatively, you can import specific items from a module:

from module_name import function_name

Standard Library: Python provides a large collection of built-in modules as part of the Python Standard Library (e.g., os, sys, math).

Creating a module: Any Python file (with a .py extension) is a module. For example, mymodule.py is a module.

Namespaces: Modules create their own namespace, meaning variables and functions inside a module are accessed using module_name.name.

Example:

# mymodule.py
def greet():
    print("Hello from the module!")

# main.py
import mymodule
mymodule.greet()  # Outputs: Hello from the module!