[issue26704] unittest.mock.patch: Double patching instance method: AttributeError: Mock object has no attribute '__name__'

[Anthony Sottile]

Anthony Sottile added the comment:

The root cause seems to be that autospecced functions return a function object (not a Mock instance) which a '.mock' attribute which is a MagicMock ( assigned here: https://github.com/python/cpython/blob/ae775ab1eb72f42de2d070158bade4bf261ac04f/Lib/unittest/mock.py#L198 )

I took a first stab at a patch (attached)

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Added file: http://bugs.python.org/file42384/patch

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