Mastering Loops and Exceptions in Python: A Practical Guide

Learn how to skillfully handle errors while looping through data in Python

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When working with data in Python, you’ll often need to iterate through collections like lists, tuples, or dictionaries. However, things don’t always go as planned, and you may encounter unexpected situations or errors. That’s where exceptions come into play.

In this article, we’ll explore how to effectively combine looping techniques with exception handling to create robust and error-resistant Python programs.

The Basics of Looping in Python

Python provides several ways to iterate over collections, with the most common being the for loop and the while loop. Here's a quick refresher:

# For loop
fruits = ['apple', 'banana', 'cherry']
for fruit in fruits:
    print(fruit)

# While loop
count = 0
while count < 5:
    print(count)
    count += 1

The for loop iterates over each item in the collection, while the while loop continues executing as long as the condition is true.

Introducing Exceptions

Exceptions are Python’s way of handling errors and unexpected situations. When an exception occurs, Python raises an…