[Tutor] return class-call or value

[Wong Zhee Shiong]

Hi all,

Below is a common class example found in textbooks.
>>>class P:
...    def __init__(self, p1, p2):
...        self.dat=(p1,p2)
...    def __add__(self,other):
...        return self.__class__(self.dat[0] + other.dat[0], \
...                              self.dat[1] + other.dat[1])
...        # or perhaps "return P(...)"
...
If I replace the return statement with a value, i.e.
     return (self.dat[0] + other.dat[0], self.dat[1] + other.dat[1])
I still get the same result for >>> p = P(1,1) as before replacement, but 
what do I miss (wrong) about returning a value in OOP sense?

Thanks,
wong


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