Python 类 __div__ 问题

问题描述

元组代表分数.我试图通过乘以倒数来除分数

The tuples represent fractions. I'm trying to divide the fractions by multiplying by the reciprical

class Test():
    def __init__(self):
        self._x=(1,2)
    def __div__(self,div_fraction):
        return (self._x[0]*div_fraction[1],self._x[1]*div_fraction[0])

y=Test()
z=y/(1,3)
print(z)

给我:

Traceback (most recent call last):
  File "E:/test.py", line 8, in <module>
   z=y/(1,3)
TypeError: unsupported operand type(s) for /: 'Test' and 'tuple'

然而，当我将 __div__ 更改为 __mul__ 并使用 * 而不是 / 时，它会做它应该做的事情.

Yet when I change the __div__ to __mul__ and use * instead of / it does what it should.

如何解决我遇到的异常?

How do I fix the exception I'm getting?

推荐答案

Python 3.x 使用 __truediv__ 和 __floordiv__.__div__ 仅适用于 2.x.

Python 3.x uses __truediv__ and __floordiv__. __div__ is 2.x-only.

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