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  r72223 | antoine.pitrou | 2009-05-02 23:13:23 +0200 (sam., 02 mai 2009) | 5 lines

  Isue #5084: unpickling now interns the attribute names of pickled objects,
  saving memory and avoiding growth in size of subsequent pickles. Proposal
  and original patch by Jake McGuire.
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This commit is contained in:
Antoine Pitrou 2009-05-02 21:41:14 +00:00
parent 6fa98fb7ec
commit a9f48a0d4f
4 changed files with 42 additions and 2 deletions
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14
Lib/test/pickletester.py
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@ -932,6 +932,20 @@ class AbstractPickleTests(unittest.TestCase):
"Failed protocol %d: %r != %r"
% (proto, obj, loaded))
def test_attribute_name_interning(self):
# Test that attribute names of pickled objects are interned when
# unpickling.
for proto in protocols:
x = C()
x.foo = 42
x.bar = "hello"
s = self.dumps(x, proto)
y = self.loads(s)
x_keys = sorted(x.__dict__)
y_keys = sorted(y.__dict__)
for x_key, y_key in zip(x_keys, y_keys):
self.assertIs(x_key, y_key)
# Test classes for reduce_ex
class REX_one(object):