报错 TypeError: 'cmp' is an invalid keyword argument for this function

TypeError: 'cmp' is an invalid keyword argument for this function

adam_

2015-08-01

源自：python进阶 2-15

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3 回答

tom_0007
2016-05-09

因为python3 没有cmp，只有key，所以会报错，用functools.cmp_to_key装饰下

@functools.cmp_to_key
def cmp_ignore_case(s1, s2):
s1 = s1.lower()
s2 = s2.lower()
if s1 < s2:
return -1
if s1 > s2:
return 1
return 0
sorted_ignore_case = functools.partial(sorted, key=cmp_ignore_case)