Function to terminate while loop in python? -

i create function keep_running define based on input either sensitive time had been running or number of iterations. can't seem come pythonic way iterations without decrementing counter outside of function, e.g.:

def keep_running(ttl):     return ttl > 0  ttl = 1 while keep_running(ttl):     do_stuff()     ttl -= 1 

is there better way this, preferably within function keep_running?

the best way manage state inside class. initialize object loop_context ttl value, , loop condition loop_context.keep_running().