Question

Hi can someone tell me why this doesn’t work? It runs on forever and doesn’t end. When the a value reaches 10 it should exit the loop.

a=0
while a!=10:
    for counter in range(11):
        a+=counter
        print a

Answer 1

a becomes 10 while it is still inside of the for loop (and gets larger than 10 when the while loop goes for a second run).

Move your print down one level and you’ll see what I mean:

a=0
while a!=10:
    for counter in range(11):
        a+=counter
    print a
    raw_input('press enter to keep looping')