Changing the repr() of a class?

[Emile van Sebille]

"Lulu of the Lotus-Eaters" <mertz at gnosis.cx> wrote in message
news:mailman.1019162916.19664.python-list at python.org...
> Alex Martelli <aleax at aleax.it> wrote previously:
> |class FunkyReprMeta(type):
> |    def __repr__(cls):
> |        return "My wonderful class %s" % cls.__name__
> |class FunkyReprObject:
> |    __metaclass__ = FunkyReprMeta
> |class C(FunkyReprObject):
> |    "whatever you want here"
>
> I don't really understand what a metaclass buys you here.  I think I
> might be missing something important, since Alex proposes it.
>
> However, it appears that one could simply define the __repr__ method
in
> the regular class FunkyReprObject, ignore metaclasses altogether, and
> wind up with the same results.  What is better about Alex' approach?
>

I think you missed the point of OP's question...

>>> class C:
...     pass
...
>>> C
<class __main__.C at 0x007A9548>

>>> class FunkyReprMeta(type):
...     def __repr__(cls):
...             return "My wonderful class %s" % cls.__name__
...
>>> class FunkyReprObject:
...     __metaclass__ = FunkyReprMeta
...
>>> class C(FunkyReprObject):
...     "whatever you want here"
...
>>>
>>> C
My wonderful class C



--

Emile van Sebille
emile at fenx.com

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