__neg__, -

__pos__, +

__invert__, ~

__add__, +

__sub__, -

__mul__, *

__div__, /

__floordiv__, //

__mod__, %

__pow__, **

__lshift__, <<

__rshift__, >>

__and__, &

__xor__, ^

__or__, |

__iadd__, +=

__isub__, -+

__imul__, *=

__idiv__, /=

__ifloordiv__, //=

__imod__, %=

__ipow__, **=

__ilshift__, <<=

__irshift__, >>=

__iand__, &=

__ixor__, ^=

__ior__, |=

__eq__, ==

__ne__, !=, <>

__gt__, >

__lt__, <

__ge__, >=

__le__, <=

#!/usr/bin/python

class Integer(object):

    def __init__(self, value):
        self._value = value;

    @property
    def value(self):
        return self._value

    @value.setter
    def value(self, v):
        self._value = v;

    @value.deleter
    def value(self):
        del self._value

    def __str__(self):
        return "Value: %d" % self._value

    def __add__(self, other):
        return Integer(self._value + other._value)

    def __sub__(self, other):
        return Integer(self._value - other._value)

    def __mul__(self, other):
        return Integer(self._value * other._value)

    def __div__(self, other):
        return Integer(self._value / other._value)

    def __neg__(self):
        return Integer(-self._value)

    def __eq__(self, other):
        return (self - other).value == 0

    def __lt__(self, other):
        return (self - other).value < 0

    def __gt__(self, other):
        return (self - other).value > 0

    def __ne__(self, other):
        return not (self == other)

    def __iadd__(self, other):
        self._value += other._value
        return self

def main():
    i1 = Integer(10);
    i2 = Integer(100);

    print(i1+i2) # __add__
    print(i1-i2) # __sub__
    print(i1*i2) # __mul__
    print(i2/i1) # __div__
    print(-i1) # __neg__

    print(i1 == i2) # __eq__
    print(i1 < i2) # __lt__
    print(i1 > i2) # __gt__
    print(i1 != i2) # __ne__

    i1 += i2;
    print(i1)

if __name__ == '__main__':
    main()
		

Index – _