Issue #11666: Teach pydoc to display full help for named tuples

1 files changed, 11 insertions, 1 deletions

diff --git a/Lib/test/test_pydoc.py b/Lib/test/test_pydoc.py
index 0ecf6a54bc..4a83dff3fd 100644
--- a/Lib/test/test_pydoc.py
+++ b/Lib/test/test_pydoc.py
@@ -12,9 +12,10 @@ import unittest
 import xml.etree
 import textwrap
 from io import StringIO
+from collections import namedtuple
 from contextlib import contextmanager
 from test.support import TESTFN, forget, rmtree, EnvironmentVarGuard, \
-     reap_children, captured_output
+     reap_children, captured_output, captured_stdout
 
 from test import pydoc_mod
 
@@ -379,6 +380,15 @@ class PydocDocTest(unittest.TestCase):
         finally:
             pydoc.getpager = getpager_old
 
+    def test_namedtuple_public_underscore(self):
+        NT = namedtuple('NT', ['abc', 'def'], rename=True)
+        with captured_stdout() as help_io:
+            help(NT)
+        helptext = help_io.getvalue()
+        self.assertIn('_1', helptext)
+        self.assertIn('_replace', helptext)
+        self.assertIn('_asdict', helptext)
+
 
 class TestDescriptions(unittest.TestCase):