buhong 发表于 2017-4-29 12:06:20

python 字典排序(值排序),并返回key序列

a = {"a":1, "c":2, "b":3, "d":0}
b = a.keys()
b.sort( key = a.__getitem__ )
print b
结果:
['d', 'a', 'c', 'b']
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