intermediate changes

ref:ac52b2b4969cd1562fcebef15e16af428f77648b

1 files changed, 4 insertions, 4 deletions

diff --git a/contrib/tools/python3/src/Lib/argparse.py b/contrib/tools/python3/src/Lib/argparse.py
index fbdfd5172fb..c46bb302711 100644
--- a/contrib/tools/python3/src/Lib/argparse.py
+++ b/contrib/tools/python3/src/Lib/argparse.py
@@ -726,7 +726,7 @@ def _get_action_name(argument):
     if argument is None:
         return None
     elif argument.option_strings:
-        return  '/'.join(argument.option_strings)
+        return '/'.join(argument.option_strings)
     elif argument.metavar not in (None, SUPPRESS):
         return argument.metavar
     elif argument.dest not in (None, SUPPRESS):
@@ -1256,9 +1256,9 @@ class FileType(object):
         # the special argument "-" means sys.std{in,out}
         if string == '-':
             if 'r' in self._mode:
-                return _sys.stdin
-            elif 'w' in self._mode:
-                return _sys.stdout
+                return _sys.stdin.buffer if 'b' in self._mode else _sys.stdin
+            elif any(c in self._mode for c in 'wax'):
+                return _sys.stdout.buffer if 'b' in self._mode else _sys.stdout
             else:
                 msg = _('argument "-" with mode %r') % self._mode
                 raise ValueError(msg)