New submission from Petr Viktorin <[email protected]>:
After `_csv.register_dialect` is called, the csv module is alive even after
it's removed from sys.modules. It should be garbage-collected.
(It's not that big a deal: unloading _csv isn't something users should do. But
it might be hiding a deeper issue.)
The following reproducer (for a debug build of Python) shows an increasing
number of refcounts. (Importing `csv` is the easiest way to call
_csv._register_dialect with a proper argument):
import sys
import gc
for i in range(10):
import csv
del sys.modules['_csv']
del sys.modules['csv']
del csv
gc.collect()
print(sys.gettotalrefcount())
----------
components: Extension Modules
messages: 393508
nosy: petr.viktorin
priority: normal
severity: normal
status: open
title: The _csv module can't be garbage-collected after _csv.register_dialect
is called
versions: Python 3.11
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Python tracker <[email protected]>
<https://bugs.python.org/issue44116>
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