From: Miss Islington (bot) <31488909+miss-islington@users.noreply.github.com>
Date: Mon, 8 Jun 2020 20:25:48 +0000 (-0700)
Subject: Minor improvement to the namedtuple implementation (GH-20741) (GH-20742)
X-Git-Tag: v3.9.0b3~6
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=299d3d1c52ffc7f9e200de577fe5d1d5310d7c27;p=thirdparty%2FPython%2Fcpython.git

Minor improvement to the namedtuple implementation (GH-20741) (GH-20742)
---

diff --git a/Lib/collections/__init__.py b/Lib/collections/__init__.py
index d11d120d76d9..61199ab20057 100644
--- a/Lib/collections/__init__.py
+++ b/Lib/collections/__init__.py
@@ -399,7 +399,9 @@ def namedtuple(typename, field_names, *, rename=False, defaults=None, module=Non
     # Variables used in the methods and docstrings
     field_names = tuple(map(_sys.intern, field_names))
     num_fields = len(field_names)
-    arg_list = repr(field_names).replace("'", "")[1:-1]
+    arg_list = ', '.join(field_names)
+    if num_fields == 1:
+        arg_list += ','
     repr_fmt = '(' + ', '.join(f'{name}=%r' for name in field_names) + ')'
     tuple_new = tuple.__new__
     _dict, _tuple, _len, _map, _zip = dict, tuple, len, map, zip
@@ -410,6 +412,7 @@ def namedtuple(typename, field_names, *, rename=False, defaults=None, module=Non
     namespace = {'_tuple_new': tuple_new,  '__builtins__': None,
                  '__name__': f'namedtuple_{typename}'}
     __new__ = eval(s, namespace)
+    __new__.__name__ = '__new__'
     __new__.__doc__ = f'Create new instance of {typename}({arg_list})'
     if defaults is not None:
         __new__.__defaults__ = defaults