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 0685488edb..2e67290d00 100644
--- a/Lib/test/test_pydoc.py
+++ b/Lib/test/test_pydoc.py
@@ -10,8 +10,9 @@ import unittest
 import xml.etree
 import test.test_support
 from contextlib import contextmanager
+from collections import namedtuple
 from test.test_support import (
-    TESTFN, forget, rmtree, EnvironmentVarGuard, reap_children)
+    TESTFN, forget, rmtree, EnvironmentVarGuard, reap_children, captured_stdout)
 
 from test import pydoc_mod
 
@@ -340,6 +341,15 @@ class TestDescriptions(unittest.TestCase):
         expected = 'C in module %s object' % __name__
         self.assertIn(expected, pydoc.render_doc(c))
 
+    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)
+
 
 def test_main():
     test.test_support.run_unittest(PyDocDocTest,