From 2fbc57af851814df567fb51054cb6f6a399f814a Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Sun, 10 May 2020 15:14:27 +0300
Subject: [PATCH] bpo-40257: Tweak docstrings for special generic aliases.
 (GH-20022)

* Add the terminating period.
* Omit module name for builtin types.
---
 Lib/typing.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Lib/typing.py b/Lib/typing.py
index b5ba38e07c8..f94996daebd 100644
--- a/Lib/typing.py
+++ b/Lib/typing.py
@@ -753,7 +753,10 @@ def __init__(self, origin, nparams, *, inst=True, name=None):
             name = origin.__name__
         super().__init__(origin, inst=inst, name=name)
         self._nparams = nparams
-        self.__doc__ = f'A generic version of {origin.__module__}.{origin.__qualname__}'
+        if origin.__module__ == 'builtins':
+            self.__doc__ = f'A generic version of {origin.__qualname__}.'
+        else:
+            self.__doc__ = f'A generic version of {origin.__module__}.{origin.__qualname__}.'
 
     @_tp_cache
     def __getitem__(self, params):