[issue12248] __dir__ semantics changed in Python 2.7.2

[Nick Coghlan]

Nick Coghlan <ncoghlan at gmail.com> added the comment:

Hmm, that behaviour looks unrelated to the specific problem Michael reported.

The initial problem in this space was that defining __dir__() completely determined the result of dir() calls, but object.__dir__() didn't actually work, so you couldn't easily get the standard list of attributes in order to supplement it.

I don't believe there is any reason to have tightened up the type constraints while fixing that - dir() should be returning sorted(obj.__dir__()) and not caring about the exact return type of the magic method.

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nosy: +ncoghlan

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<http://bugs.python.org/issue12248>
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