On 5/12/07, Steven Bethard <[EMAIL PROTECTED]> wrote:
> And here's a version that doesn't lose updates to the finalizer attributes:
>
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/519635
>
> It replaces enable_finalizer() with a class attribute __finalattrs__.
> >From __finalize__, all class attributes and methods are accessible, as
> are any instance attributes specified by __finalattrs__. Guido's
> BufferedWriter example looks like::
>
> class BufferedWriter(Finalized):
> __finalattrs__ = 'buffer', 'raw'
> ...
> def flush(self):
> self.raw.write(self.buffer)
> self.buffer = b""
>
> def __finalize__(self):
> self.flush()
But can I subclass it and in the subclass override (extend) flush()? E.g.
class MyWriter(BufferedWriter):
def flush(self):
super(MyWriter, self).flush() # Or super.flush() once PEP xxx is accepted
print("Feel free to unplug the disk now")
--
--Guido van Rossum (home page: http://www.python.org/~guido/)
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