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第二题

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_Ljj110719

#1 Created at ... [Delete] [Delete and Lock User] 
def product(L):
    def multiply(x, y):
        return x*y
    return reduce(multiply, L)

>>> L = [1, 2, 3, 4]
>>> print(product(L))
24

供参考，求指正

_Ljj110719

#2 Created at ... [Delete] [Delete and Lock User] 
from functools import reduce
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