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Jordan young
Courses Plus Student 5,276 PointsIncorrect code in __mul__ __rmul__ challenge.
Hi. I'm not too sure why this is incorrect, can anyone advise?
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):
return self * other
def __rmul__(self, other):
return self * other
2 Answers
Jennifer Nordell
Treehouse TeacherHi there, Jordan young ! Before you can multiply a string by a number, you need to first convert it to an int. So where you have self * other, you need int(self) * other.
Hope this helps!
Jordan young
Courses Plus Student 5,276 PointsThis is indeed solved.
Grrr don't you hate it when that happens?
Thank you :)
Jordan young
Courses Plus Student 5,276 PointsJordan young
Courses Plus Student 5,276 PointsHi Jennifer, This does make sense.
However after doing that, I am returned with this error " Can't multiply a number with a
NumString(i.e.10 * NumString)"my code update is as follows: def mul (self, other): return int(self) * other
This was an especially confusing error as I thought that int placement converts the string like your message suggests.
Is there a mistake somewhere in the code above that I previously had used?
Jennifer Nordell
Treehouse TeacherJennifer Nordell
Treehouse TeacherHi again, Jordan young ! You have a typo in the definition of your method.
You typed:
def __rmmul__(self, other):But you meant to type:
def __rmul__(self, other):Note that your version contains two "m"s where as the correct version contains one "m"
Hope this helps!