#19895: Second iteration over an invalid queryset returns an empty list instead
of
an exception
-------------------------------------+-------------------------------------
Reporter: gnosek | Owner: gnosek
Type: Bug | Status: new
Component: Database layer | Version: 1.4
(models, ORM) | Resolution:
Severity: Release blocker | Triage Stage: Accepted
Keywords: | Needs documentation: 0
Has patch: 1 | Patch needs improvement: 1
Needs tests: 0 | UI/UX: 0
Easy pickings: 0 |
-------------------------------------+-------------------------------------
Comment (by akaariai):
Here is a minimalistic case showing the bug in Python:
{{{
class MyObj(object):
def __iter__(self):
self._iter = iter(self.iterator())
return iter(self._iter)
def iterator(self):
try:
while True:
yield 1
except Exception:
raise
i = next(iter(MyObj()))
import gc
gc.collect()
print(gc.garbage)
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/19895#comment:8>
Django <https://code.djangoproject.com/>
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