#27202: Investigate RenameMethodsBase effect on yaml serialization
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Reporter: Ilya Semenov | Owner: nobody
Type: Bug | Status: new
Component: Utilities | Version: 1.8
Severity: Normal | Resolution:
Keywords: yaml | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by Ryan Castner):
Ok did a bit of investigating, `RenameMethodsBase` inherits from `type`. I
may be crazy but that sounds a lot like
https://docs.python.org/2/library/pickle.html#pickling-and-unpickling-
extension-types. Specifically:
When the Pickler encounters an object of a type it knows nothing about
— such as an extension type — it looks in two places for a hint of how to
pickle it.
Those hints are the `__reduce__` and `__reduce_ex__` methods. The
`__reduce_ex__` method states `method will be called with a single integer
argument, the protocol version`.
And that call seems to fail here
https://github.com/python/cpython/blob/c30098c8c6014f3340a369a31df9c74bdbacc269/Objects/typeobject.c#L4169
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Ticket URL: <https://code.djangoproject.com/ticket/27202#comment:2>
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