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bpo-40277: Add a repr() to namedtuple's _tuplegetter to aid with introspection (GH-19537)

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Ammar Askar 2020-04-14 23:36:08 -07:00 • committed by GitHub
parent 4f98f465f1
commit a86b522d8f
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3 changed files with 23 additions and 1 deletions
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12
Lib/test/test_collections.py
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@ -411,6 +411,18 @@ class TestNamedTuple(unittest.TestCase):
self.assertIs(P.m.__doc__, Q.o.__doc__)
self.assertIs(P.n.__doc__, Q.p.__doc__)
@support.cpython_only
def test_field_repr(self):
Point = namedtuple('Point', 'x y')
self.assertEqual(repr(Point.x), "_tuplegetter(0, 'Alias for field number 0')")
self.assertEqual(repr(Point.y), "_tuplegetter(1, 'Alias for field number 1')")
Point.x.__doc__ = 'The x-coordinate'
Point.y.__doc__ = 'The y-coordinate'
self.assertEqual(repr(Point.x), "_tuplegetter(0, 'The x-coordinate')")
self.assertEqual(repr(Point.y), "_tuplegetter(1, 'The y-coordinate')")
def test_name_fixer(self):
for spec, renamed in [
[('efg', 'g%hi'), ('efg', '_1')], # field with non-alpha char