GH-133789: Fix unpickling of pathlib objects pickled in Python 3.13 #133831
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In Python 3.13 (but not 3.12 or 3.14), pathlib classes are defined in
pathlib._local
rather thanpathlib
. In hindsight this was a mistake, but it was difficult to predict how the abstract/local split would pan out.In this patch we re-introduce
pathlib._local
as a stub module that re-exports the classes frompathlib
. This allows path objects pickled in 3.13 to be unpicked in 3.14+