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Python Python Basics (2015) Logic in Python Around and Around

Genry Sats
Genry Sats
3,938 Points
Posted by Genry Sats
Genry Sats
3,938 Points

Question about while loop

I can't understand why is this program doesn't run: start = 0 while start: print(start) start -= 1

1 Answer

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

:point_right: The value 0 (zero) is considered "falsey".

When the loop begins, it tests start and finds it to be "falsey". So the body of the loop is not executed at all.

So the program does run, but the conditions cause it not to do anything that can be seen.