[Python-Dev] Version 3 Proposal: thread-local data (original) (raw)
Tim Peters tim.one at comcast.net
Thu Jul 1 00:12:27 EDT 2004
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[Jim] ...
def del(self): key = object.getattribute(self, 'local_key') for thread in enumerate(): if key in thread.dict: del thread.dict[key]
Note that a del method should never reference a module global "enumerate" in this case) -- it's all but certain to lead to "iteration over non-sequence" Mystery Errors at Python shutdown time (due to module globals getting "None'd out"). The conventional workaround is to give the class an attribute initialized from the module global; e.g.,
class local(_localbase): _enumerate = threading.enumerate
...
def __del__(self):
...
for thread in self._enumerate():The conventional workaround that doesn't work is to spell that
for thread in local._enumerate():instead; it doesn't work because "local" is also a module global.
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