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我是新来的蟒蛇,我已经看到了这几次:Python的 - “_”之争到功能
>>> nums = [1,2,3,4,5]
>>> [(x,y) for x in nums for y in nums]
[(1, 1), (1, 2), (1, 3), (1, 4), (1, 5), (2, 1), (2, 2), (2, 3), (2, 4), (2, 5), (3, 1), (3, 2), (3, 3), (3, 4), (3, 5), (4, 1), (4, 2), (4, 3), (4, 4), (4, 5), (5, 1), (5, 2), (5, 3), (5, 4), (5, 5)]
>>> min(_, key=lambda pair: pair[0]/pair[1])
(1, 5)
在上面是什么目的的代码:将“_”在min函数和还有什么地方可以使用?
http://stackoverflow.com/questions/5787277/python-underscore-as-a函数参数 – simchona 2012-04-19 16:22:54
[Python下划线作为函数参数]的可能重复(http://stackoverflow.com/questions/5787277/python-underscore-as-a-function-parameter) – ShadowRanger 2017-04-19 00:26:32