How to use while loops?

A while loop in Python repeatedly executes a block of code as long as a specified condition is True. Here's a simple guide on how to use while loops:

Basic Structure

while condition:
    # Code to execute

Example

Here's a basic example that counts from 1 to 5:

count = 1
while count <= 5:
    print(count)
    count += 1  # Increment count by 1

Explanation

1. Initialization: count is set to 1.
2. Condition: The loop continues as long as count is less than or equal to 5.
3. Execution: Inside the loop, it prints the current value of count.
4. Increment: count is increased by 1 in each iteration.

Important Notes

• Infinite Loops: Ensure the condition will eventually become False, or you'll create an infinite loop.
• Breaking the Loop: You can use the break statement to exit the loop prematurely if needed.

Summary

while loops are useful for situations where the number of iterations isn't known beforehand. For more practice with loops, consider exploring related labs on LabEx!