Python Intermediate Concepts: Functions, Loops, and Modules

Python Intermediate Concepts: Functions, Loops, and Modules

Python is one of the most popular programming languages today due to its simplicity, readability, and versatility. After learning the basics of Python, the next step is to master intermediate concepts like functions , loops , and modules . These are essential for writing efficient, organized, and reusable code. This guide will explain these concepts in detail, provide practical examples, and give exercises for hands-on practice. 1. Python Functions Functions are reusable blocks of code designed to perform a specific task. Using functions makes your code modular and avoids repetition. In Python, functions are defined using the def keyword. 1.1 Defining and Calling Functions Here’s a simple example of defining a function : def greet(name): print(f"Hello, {name}! Welcome to Python.") greet("Alice") greet("Bob") Output: Hello, Alice! Welcome to Python. Hello, Bob! Welcome to Python. 1.2 Function Parameters and Arguments Functions can accept inputs, known as parameter…