Operator overloading and __getattr__

[Samuel Kleiner]

Bengt Richter wrote:
> On Mon, 22 Dec 2003 10:03:03 -0600, Samuel Kleiner <sam at h41n2fls31o839.telia.com> wrote:
>
>>I'm trying to create methods on method access- but __getattr__ fails
>>with operator overloading(below) Any suggestions? EG:
> First please explain why you are trying to do whatever it is you're trying to do ;-)

I was trying to automatically extend M to cover all binary operators not
covered by dict, preferably without assigning to them all.

class M(dict):
    def __add__(self, add):
        if type(add) in self:            
            self[type(add)]=self[type(add)]+add
        else:
            self[type(add)]=add
        return self

    def __str__(self):
        return "+".join(map(str,self.values()))

print M()+"foo"+2+"bar"+5
Out:
foobar+7

>>Causes TypeError on the last line
> I doubt if that's the first problem ;-)

Yes, I was jetlagged. new.instancemethod seems the way to go, really.


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