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Python Object-Oriented Python Advanced Objects Multiplication

Posted by Kudakwashe Moyo
Kudakwashe Moyo
3,811 Points

This class should look familiar! This class should look familiar! I need to you add __mul__ to NumString

This class should look familiar!

I need to you add mul to NumString so we can multiply our number string by a number. Go ahead and add rmul, too.

numstring.py 
class NumString:
    def __init__(self, value):
        self.value = str(value)

    def __str__(self):
         return self.value

    def __int__(self):
        return int(self.value)

    def __float__(self):
        return float(self.value)

    def __add__(self, other):
        if '.' in self.value:
            return float(self) + other
        return int(self) + other

    def __radd__(self, other):
        return self + other

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

    def __mul__(self, other):
        if "." in self.value:
            return float (self) * other
        return int(self) * other

    def __imul__(self, other):
        self.value = self * other
        return self.other
Kudakwashe Moyo
Kudakwashe Moyo
3,811 Points

def mul(self, other): if "." in self.value: return float (self) * other return int(self) * other

def __imul__(self, other):
    return self * other

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,423 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,423 Points

You are very close.

  • be sure to include the requested __rmul__ method
  • the __imul__ should update self.value and return self
Kudakwashe Moyo
Kudakwashe Moyo
3,811 Points

Thank you, Chris