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去除列表中重复元素，列表推导答案有误 #42

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mggger opened this issue Dec 27, 2017 · 1 comment

mggger commented Dec 27, 2017

l1 = [1, 2, 3, 4, 5, 1, 2]
l2 = []
[l2.append(i) for i in l1 if not i in l2]
[None, None, None, None, None]

coder1688 commented Feb 26, 2018

没错，你得print(l2)

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