[Python-Dev] test___all__ polluting sys.modules? (original) (raw)

Richard Oudkerk 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.

-- Richard



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