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Mon Nov 17 17:46:47 EST 2003 · https://mail.python.org/pipermail/python-dev/2003-November/040293.html

Hi again,

trying to pickle bound python methods,
I'm now running into another problem.
It seems to give a problem when asking
for an attribute of a bound method:

 >>> class a:
...  def x(self): pass
 >>> a.x                   # good so far
<unbound method a.x>
 >>> a().x                 # very good
<bound method a.x of <__main__.a instance at 0x007A6CE8>>
 >>> a.x.__reduce__        # naaaaah? Sounds bad
<built-in method __reduce__ of function object at 0x00792630>
 >>> a().x.__reduce__      # very bad.
<built-in method __reduce__ of function object at 0x00792630>
 >>> a.x.__reduce__==a().x.__reduce__
1

So I have the impression these methods loose their
relationship to their originating object.
Is this behavior by intent, i.e. is it impossible to write
a working __reduce__ method for a bound class method?

thanks again - chris
-- 
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[Python-Dev] more on pickling