commit 42671aea2db6cbc54369617da0fd3545048e0a45
author Jakub Kulík <Kulikjak@gmail.com> Fri Sep 13 11:25:32 2019 +0200
committer Julien Palard <julien@palard.fr> Fri Sep 13 11:25:32 2019 +0200
tree bdd9e6c196e4fa852d3c3ec04dd8b1add824b797
parent 7183064e9e2a1b19f2ff469a65a34e7094483881

bpo-37785: Fix xgettext warning in argparse (GH-15161)

Lib/argparse.py

diff --git a/Lib/argparse.py b/Lib/argparse.py
index 2e46e76..370692b 100644
--- a/Lib/argparse.py
+++ b/Lib/argparse.py
@@ -1214,8 +1214,9 @@
             return open(string, self._mode, self._bufsize, self._encoding,
                         self._errors)
         except OSError as e:
-            message = _("can't open '%s': %s")
-            raise ArgumentTypeError(message % (string, e))
+            args = {'filename': string, 'error': e}
+            message = _("can't open '%(filename)s': %(error)s")
+            raise ArgumentTypeError(message % args)
 
     def __repr__(self):
         args = self._mode, self._bufsize