[Python-Dev] test___all__ polluting sys.modules?
shibturn at gmail.com
Mon Dec 31 18:35:32 CET 2012
On 30/12/2012 9:52pm, Antoine Pitrou wrote:
> If you have an object with a __del__ method as a module global, the
> cyclic gc will refuse to consider the module globals at all (which
> means it will affect unrelated objects).
> So, yes, I think the shutdown purge is still necessary. Perhaps there
> are ways to make it smarter.
With my earlier suggestion a module deleted from sys.modules before
shutdown can have an unreclaimable global dict (if it contains a global
with a __del__ method).
Perhaps, instead, modules could use a weakrefable subclass of dict for
their globals dicts. The module destructor could save the global dicts
of deleted modules in a registry. At shutdown any remaining globals
dicts can be purged.
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