Comparison function of Python2, CMP

classShu (object):def __init__(SELF,SS): SELF.SS=SSdef __str__(self):return '(%s:%s)'%(Self.name, Self.score)__repr__=__str__    def __cmp__(self, s):Print('func __cmp__ work')        ifSELF.SS <S.SS:return-1elifSELF.SS >S.SS:return1Else:            return0a=shu (3) b=shu (2) C=a>b#run __cmp__,c to TrueD=CMP (A, B)#run __cmp__,d to 1, note that D differs from the above C type, an int, a bool

Python2 's comparison function is that CMP.CMP calls the object's __cmp__ method, which is built into the string, Integer, list, and so on.

But the comparison function in Pyhon3 is not CMP anymore.

Comparison function of Python2, CMP