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![](https://ecs-static.teamtreehouse.com/assets/views/marketing/shared/community-banner-white-47072046c51352fe6a69f5e691ff5700b28bb11d45197d7bdf066d9ea3f72d0c.webp)
![Shandale Shelton](https://uploads.teamtreehouse.com/production/profile-photos/8575332/micro_IMG_4179.jpg)
Shandale Shelton
7,424 PointsNeed help not sure why the * operator wouldn't work when adding multiplication to this code.
Need help not sure why the * operator wouldn't work when adding multiplication to this code.
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.valued
def __mul__(self, other):
self.value = self * other
return self * other
def __rmul__(self, other):
return self * other
2 Answers
![Steven Parker](https://uploads.teamtreehouse.com/production/profile-photos/969492/micro_tool_chess_set_2.jpg)
Steven Parker
230,688 PointsThe operator is correct, but you still need to account for string-to-number conversion before performing math. See the "add" method for an example.
![Shandale Shelton](https://uploads.teamtreehouse.com/production/profile-photos/8575332/micro_IMG_4179.jpg)
Shandale Shelton
7,424 PointsAh I see!
Thanks!
Shandale Shelton
7,424 PointsShandale Shelton
7,424 PointsDo you have any best practice when studying a concept before moving on to the next step? I feel with some instructors the do really well to make sure you understand the concept and whats happening with your code but as you advance they go through the process as if you have been coding for years.