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authorBenjamin Peterson <benjamin@python.org>2012-08-07 00:53:09 (GMT)
committerBenjamin Peterson <benjamin@python.org>2012-08-07 00:53:09 (GMT)
commitb37df519c793d40718fda78a9961811fae973f36 (patch)
treeb4a98c5e8e3e070f32a27c36c6f77daeaeb3d141 /Lib/test
parenta0abb4404a839787bc0791c7ea3b261fcd146652 (diff)
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fix yield from return value on custom iterators (closes #15568)
Diffstat (limited to 'Lib/test')
-rw-r--r--Lib/test/test_pep380.py14
1 files changed, 14 insertions, 0 deletions
diff --git a/Lib/test/test_pep380.py b/Lib/test/test_pep380.py
index 658bcb9..9569e10 100644
--- a/Lib/test/test_pep380.py
+++ b/Lib/test/test_pep380.py
@@ -940,6 +940,20 @@ class TestPEP380Operation(unittest.TestCase):
for stack in spam(eggs(gen())):
self.assertTrue('spam' in stack and 'eggs' in stack)
+ def test_custom_iterator_return(self):
+ # See issue #15568
+ class MyIter:
+ def __iter__(self):
+ return self
+ def __next__(self):
+ raise StopIteration(42)
+ def gen():
+ nonlocal ret
+ ret = yield from MyIter()
+ ret = None
+ list(gen())
+ self.assertEqual(ret, 42)
+
def test_main():
from test import support