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Python Object-Oriented Python Advanced Objects Multiplication

Posted by Alex Salas
Alex Salas
3,429 Points

object oriented python __imul__ Bummer Try Again

What am I doing wrong here?

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 __rmul__(self, other):
        return self * other

    def __imul__(self, other):
        self.value = self
        return self.value *= other

2 Answers

Steven Parker
Steven Parker
243,160 Points
Steven Parker
Steven Parker
243,160 Points

Your __imul__ function is a bit off.

But there's already an __iadd__ function you can use as a model, just change the math operator.

Alex Salas
Alex Salas
3,429 Points

Thanks Steven. However, it is still not working for me. I tried that before:

def imul(self, other): self.value = self *= other return self.value

Alex Salas
Alex Salas
3,429 Points
Alex Salas
Alex Salas
3,429 Points

Never mind.. I figured it out. Thanks Steven !

Julian Silvestri
Julian Silvestri
4,214 Points

I am stuck on the same thing... How did you finish the challenge?

Julian Silvestri
Julian Silvestri
4,214 Points

I cannot get my imul to work. It is set up exactly as you have it

what am I missing?

Steven Parker
Steven Parker
243,160 Points
Steven Parker
Steven Parker
243,160 Points

Julian Silvestri — but he asked the question because the one shown above did not work.

Look at how the iadd function that is already part of the class is constructed, and do something similar but using different math.