如何将列表中的所有项目与Python相乘? [英] How can I multiply all items in a list together with Python?

问题描述

我需要编写一个函数 一个列表数字，然后将它们相乘.例子: [1,2,3,4,5,6]会给我1*2*3*4*5*6.我真的可以帮助您.

I need to write a function that takes a list of numbers and multiplies them together. Example: [1,2,3,4,5,6] will give me 1*2*3*4*5*6. I could really use your help.

推荐答案

Python 3:使用functools.reduce:

Python 3: use functools.reduce:

>>> from functools import reduce
>>> reduce(lambda x, y: x*y, [1,2,3,4,5,6])
720

Python 2:使用reduce:

Python 2: use reduce:

>>> reduce(lambda x, y: x*y, [1,2,3,4,5,6])
720

要与2和3兼容，请使用pip install six，然后:

For compatible with 2 and 3 use pip install six, then:

>>> from six.moves import reduce
>>> reduce(lambda x, y: x*y, [1,2,3,4,5,6])
720

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