while loop - Python Curiosity -

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i curious how program reads. have foo functions top. "thing" global variable. sets "thing" equals 100 "item" equals 100. return "item" == 0 not sure about. "item" equal 0? going down flag = false. "when not flag:" called, asks users input , whatever reason until enter "0" flag turns true , "thing" equals 0. if can explain how works appreciate it

def foo(item):     global thing     thing = item     return item == 0  thing = 100 flag = false while not flag:     flag = foo(int(input("give me want here: "))) print(thing)

item set whatever user responded when prompted give me want here, converted integer. in turn thing set value (thing = item binds global thing whatever item points at).

so if user enters 0, item set 0, thing set 0 , item == 0 returns true, ending while loop.


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