Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Python Object-Oriented Python Advanced Objects Multiplication

What am i doing wrong?

I've added the mul as I've been doing all along but nothing is happening. Please help me find where the problem is

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

1 Answer

Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there, Tapiwanashe Jandura! There are two things going on here. First is an error in the method definition and secondly, you're missing the __rmul__ that the challenge is also asking for.

You typed:

def __mul__(self. other):  # note the . instead of ,

But you meant for there to be a comma between self and other:

def __mul__(self, other):

Then you just need to add the __rmul__ method and you should be set! Hope this helps! :sparkles:

Thank you so much. You are the best!!