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Igor Dias5,155 Points
What's the difference between multiply self or self.value inside the method?
Inside the rmul() method when I multiply other only by self it returns a numerical multiplication. On the order hand, if I multiply other by self.value it returns string multiplication. Whats the difference between the cases?
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.value) * other def __rmul__(self, other): return self * other # def __rmul__(self, other): # if '.' in self.value or '.' in other: # return float(self) * other # return int(self) * other
Steven Parker218,596 Points
The internal value is stored as a string; but when you refer to the object itself, the internal conversion method is implicitly invoked for you to make it a number.