[issue25731] Assigning and deleting __new__ attr on the class does not allow to create instances of this class

[Bohuslav "Slavek" Kabrda]

Bohuslav "Slavek" Kabrda added the comment:

Hi, I'm maintainer of flexmock [1] and some users of my library have started hitting this bug [2] - when one tries to mock __new__ and then revert this mock at the end of testcase to the original one (either by deleting the mock __new__ or replacing mock __new__ by the old one), then one gets "TypeError: object() takes no parameters".

I think that solution proposed by Eryk is correct, but I don't have that much insight into Python internals to confirm that 100 %. I would appreciate this getting fixed. Thanks!

[1] https://github.com/bkabrda/flexmock
[2] https://github.com/bkabrda/flexmock/issues/13

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nosy: +bkabrda

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<http://bugs.python.org/issue25731>
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