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bpo-43292: Fix file leak in ET.iterparse() when not exhausted #31696

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Merged
merged 3 commits into from
Mar 7, 2022
Merged

bpo-43292: Fix file leak in ET.iterparse() when not exhausted #31696

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1495ccd
bpo-43292: Fix file leak in iterparse when not exhausted
jacobtylerwalls Mar 5, 2022
b29dba7
Update ElementTree.py
serhiy-storchaka Mar 6, 2022
f532022
Update Lib/test/test_xml_etree.py
serhiy-storchaka Mar 6, 2022
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Update ElementTree.py
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@serhiy-storchaka
serhiy-storchaka authored Mar 6, 2022
commit b29dba75e02c47a91dc94b4ce199070491c49db5
13 changes: 7 additions & 6 deletions Lib/xml/etree/ElementTree.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1245,13 +1245,13 @@ def iterparse(source, events=None, parser=None):
# parser argument of iterparse is removed, this can be killed.
pullparser = XMLPullParser(events=events, _parser=parser)

def iterator():
nonlocal source
def iterator(source):
close_source = False
if not hasattr(source, "read"):
source = open(source, "rb")
close_source = True
try:
if not hasattr(source, "read"):
source = open(source, "rb")
close_source = True
yield None
while True:
yield from pullparser.read_events()
# load event buffer
Expand All @@ -1267,11 +1267,12 @@ def iterator():
source.close()

class IterParseIterator(collections.abc.Iterator):
__next__ = iterator().__next__
__next__ = iterator(source).__next__
it = IterParseIterator()
it.root = None
del iterator, IterParseIterator

next(it)
return it


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