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Fix KeyError in LocalWeakReferencedCache

This commit is contained in:
Eugenio Lacuesta 2020-05-27 11:13:21 -03:00
parent b82a480e91
commit 44d5801b05
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2 changed files with 3 additions and 2 deletions
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4
scrapy/utils/datatypes.py
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@ -105,8 +105,8 @@ class LocalWeakReferencedCache(weakref.WeakKeyDictionary):
def __getitem__(self, key):
try:
return super(LocalWeakReferencedCache, self).__getitem__(key)
except TypeError:
return None # key is not weak-referenceable, it's not cached
except (TypeError, KeyError):
return None # key is either not weak-referenceable or not cached
class SequenceExclude:

1
tests/test_utils_datatypes.py
View File

@ -271,6 +271,7 @@ class LocalWeakReferencedCacheTest(unittest.TestCase):
self.assertNotIn(r1, cache)
self.assertIn(r2, cache)
self.assertIn(r3, cache)
self.assertEqual(cache[r1], None)
self.assertEqual(cache[r2], 2)
self.assertEqual(cache[r3], 3)
del r2