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Python 101: Interactively learn how to program with Python 3

The while Loop

Explore how to use the while loop in Python to repeat code until a condition is met. Understand how to control loop execution with break and continue statements, avoid infinite loops, and apply increment shortcuts for effective looping.

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The while loop is also used to repeat sections of code, but instead of looping n number of times, it will only loop until a specific condition is met. Let’s look at a very simple example:

Python 3.5
i = 0
while i < 10:
    print(i)
    i = i + 1

The while loop is kind of like a conditional statement. Here’s what this code means: while the variable i is less than ten, print it out. Then at the end, we increase i’s value by one. ...