[3.13] gh-105895: Add match and case doc to help() (GH-152113) (#152128)

(cherry picked from commit 1d55b3778c)

Co-authored-by: dzherb <zherbin.dima@yandex.ru>
Co-authored-by: Stan Ulbrych <stan@python.org>

Doc/tools/extensions/pydoc_topics.py

@@ -69,6 +69,7 @@ _PYDOC_TOPIC_LABELS: Sequence[str] = sorted({
     "integers",
     "lambda",
     "lists",
+    "match",
     "naming",
     "nonlocal",
     "numbers",

Lib/pydoc.py

@@ -1832,6 +1832,7 @@ class Helper:
         'async': ('async', ''),
         'await': ('await', ''),
         'break': ('break', 'while for'),
+        'case': 'match',
         'class': ('class', 'CLASSES SPECIALMETHODS'),
         'continue': ('continue', 'while for'),
         'def': ('function', ''),
@@ -1843,11 +1844,12 @@ class Helper:
         'for': ('for', 'break continue while'),
         'from': 'import',
         'global': ('global', 'nonlocal NAMESPACES'),
-        'if': ('if', 'TRUTHVALUE'),
+        'if': ('if', 'TRUTHVALUE match'),
         'import': ('import', 'MODULES'),
         'in': ('in', 'SEQUENCEMETHODS'),
         'is': 'COMPARISON',
         'lambda': ('lambda', 'FUNCTIONS'),
+        'match': ('match', 'if'),
         'nonlocal': ('nonlocal', 'global NAMESPACES'),
         'not': 'BOOLEAN',
         'or': 'BOOLEAN',

Lib/test/test_pydoc/test_pydoc.py

@@ -2198,7 +2198,7 @@ class TestHelper(unittest.TestCase):
 
     def test_keywords(self):
         self.assertEqual(sorted(pydoc.Helper.keywords),
-                         sorted(keyword.kwlist))
+                         sorted(keyword.kwlist + ['case', 'match']))
 
     def test_interact_empty_line_continues(self):
         # gh-138568: test pressing Enter without input should continue in help session

Misc/NEWS.d/next/Library/2026-06-24-22-16-35.gh-issue-105895.hRkuEw.rst

@@ -0,0 +1,2 @@
+Add :keyword:`match` and :keyword:`case` to the list of supported topics by
+:func:`help`.