Josh Rosenberg added the comment:
This is what I get for leaving a response up and working on it intermittently
for three hours, and not rechecking: I found the same basic problem.
For the record, I also found a terribly hacky way of doing this sort of
rebinding manually, should you actually need to do so under the current design:
def make_class_closure(__class__):
'''Makes a one-tuple closure with a cell for the provided class'''
return (lambda: super).__closure__
class MyList(list):
def insert(self, index, object):
super().insert(index, object)
class MyList2(list):
pass
MyList2.insert = types.FunctionType(MyList.insert.__code__, globals(),
closure=make_class_closure(MyList2))
It would need further improvements to recognize when it needs to run, deal with
existing closures, handle top-level functions without __class__ in their
closure co_freevars, etc., and I won't even pretend that's a sane workaround
for the problem, but it does demonstrate what is happening/what would need to
be changed to make it work, if indeed that's desirable.
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<http://bugs.python.org/issue29944>
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