Python operator overloading __div__ [duplicate]

Question

I have a class that has the functions mul and div implemented as follows:

def __mul__(self, other):
    return Foo(self.a * other)

def __div__(self, other):
    return Foo(self.a / other)

The multiplication (e.g. a * b, where a is an instance of the class Foo and b is an integer) works fine, but the division (a / b) gives an error saying the operator is not supported. How do I get around this?

TypeError: unsupported operand type(s) for /: 'Foo' and 'int'

Answer 1

You are using from __future__ import division. So you have to implement __truediv__ for /, and __floordiv__ for //.