You can use an else on a while loop which will hit if the loop runs normally. If the loop is terminated prematurely though (using break or return), the code in the else won't execute. This construct can also be used with a for loop.
>>> while True:
... break
... else:
... print("hits")
...
>>> a = True
>>> while a:
... a = False
... else:
... print("hits")
...
hits
#looping