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authorRaymond Hettinger <python@rcn.com>2007-11-14 23:02:30 (GMT)
committerRaymond Hettinger <python@rcn.com>2007-11-14 23:02:30 (GMT)
commitb5e5d0741a7a9b8219abac143e06f40b804886c9 (patch)
tree27bad9c66554a0b924a39f72bdb1243bc9639d6c
parent78f27e001b5099fee2139afedb2f0992c7022be8 (diff)
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Add test for __fields__ being read-only
-rw-r--r--Lib/test/test_collections.py8
1 files changed, 8 insertions, 0 deletions
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
index 348919f..04d4d9d 100644
--- a/Lib/test/test_collections.py
+++ b/Lib/test/test_collections.py
@@ -43,6 +43,14 @@ class TestNamedTuple(unittest.TestCase):
self.assertEqual(p.__replace__('x', 1), (1, 22)) # test __replace__ method
self.assertEqual(p.__asdict__(), dict(x=11, y=22)) # test __dict__ method
+ # Verify that __fields__ is read-only
+ try:
+ p.__fields__ = ('F1' ,'F2')
+ except AttributeError:
+ pass
+ else:
+ self.fail('The __fields__ attribute needs to be read-only')
+
# verify that field string can have commas
Point = namedtuple('Point', 'x, y')
p = Point(x=11, y=22)