[Python-3000] Compiling the PEP 3115 metaclass syntax (original) (raw)
Nicko van Someren nicko at nicko.org
Thu Mar 15 14:30:15 CET 2007
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On 15 Mar 2007, at 04:33, Tony Lownds wrote:
Does **kwds need to be passed to prepare and also to metaclass constructor? Removing that would make it easier to provide nice error messages. Custom prepare implementations can always store the **kwds that are needed in or on the dictionary-like object.
If you don't pass it to both the constructor and the preparer then
all metaclasses which take keyword arguments must have a prepare
function whether they have custom local storage or not. This seems
to be non-obvious and it also unnecessarily conflates the issues of
custom locals storage and passing arguments to metaclasses.
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