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其实sorted函数还有个参数cmp

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LikeABird_CX

#1 Created at ... [Delete] [Delete and Lock User] 
# 1.
sorted(L, cmp=lambda x,y: cmp(x[0].lower(), y[0].lower()))


# 2.
sorted(L, cmp=lambda x,y: cmp(x[1], y[1]), reverse=True)

廖雪峰

#2 Created at ... [Delete] [Delete and Lock User]

那是2.7版本的

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