Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trial
Carson Bartlett
3,574 PointsIs mul just the same as add but with a multiplication sign?
It would seem like I would just substitute the plus sign with an asterisk and be on my merry way but it's not working.
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.value) * other
return int(self.value) * other
def __rmul:
return self.value * other
1 Answer
Steven Parker
229,732 PointsYou have the right idea, but you haven't followed the example of the "add" methods exactly:
- you have "self.value" where the other methods have just "self"
- one method name has the "dunder" (double underscores) on just one side of the name instead of both