return???

return???????????????? ???? ????????????????????????? ???????? ??

?????????????????

??7.7 ?????????????????

#!/usr/bin/python
# Filename: func_return.py

def maximum(x, y):
    if x > y:
        return x
    else:
        return y

print maximum(2, 3)

????????code/func_return.py??

???

$ python func_return.py
3

????ι???

maximum????????????е?????????????????????????????????ü???if..else?????????????????? ???? ??????

?????з??????return???????return None??None??Python?б??????κζ?????????????????磬??????????????None????????????????

???????????????return???????????????β??????return None??????????print someFunction()????????????????????someFunction??????return????????

def someFunction():
    pass

pass?????Python?б???????????顣