[Python-Dev] Non-string keys in type dict (original) (raw)
Chris Kaynor ckaynor at zindagigames.com
Thu Mar 8 02:49:55 CET 2012
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On Wed, Mar 7, 2012 at 5:45 PM, Victor Stinner <victor.stinner at gmail.com>wrote:
> During the Language Summit 2011 (*), it was discussed that PyPy and > Jython don't support non-string key in type dict. An issue was open to > emit a warning on such dict, but the patch has not been commited yet.
It's the issue #11455. As written in the issue, there are two ways to create such type: class A(object): locals()[42] = "abc" or type("A", (object,), {42: "abc"}) Both look like an ugly hack.
Here is a cleaner version, using metaclasses (Python 2.6):
class M(type): def new(mcs, name, bases, dict): dict[42] = 'abc' return super(M, mcs).new(mcs, name, bases, dict)
class A(object): metaclass = M
Victor
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