Control of flow

The while loop

A while loop will execute the same block of code until a specified condition returns True. For example

a = 0

while a <= 10:
    print('a is', a)
    a += 1

The infinite loop

A common convention for creating an infinite loop is to use a while loop given a condition that will never return False

Stopping an infinite loop

The example below will print Hello, World! continuously until you hit Control + C

while True:
    print('Hello, World!')