bpo-44864: Do not translate user-provided strings in ArgumentParser.add_subparsers() (GH-27667)

Call _() on literal strings only.

Author: jdetrey

Lib/argparse.py

@@ -1804,8 +1804,8 @@ def add_subparsers(self, **kwargs):
         kwargs.setdefault('parser_class', type(self))
 
         if 'title' in kwargs or 'description' in kwargs:
-            title = _(kwargs.pop('title', 'subcommands'))
-            description = _(kwargs.pop('description', None))
+            title = kwargs.pop('title', _('subcommands'))
+            description = kwargs.pop('description', None)
             self._subparsers = self.add_argument_group(title, description)
         else:
             self._subparsers = self._positionals

Misc/NEWS.d/next/Library/2021-08-24-19-37-46.bpo-44864.KzxaDh.rst

@@ -0,0 +1 @@
+Do not translate user-provided strings in :class:`argparse.ArgumentParser`.