Using %(default)s in argparse

Author: dmotte

ui24rsc/cli.py

@@ -171,11 +171,11 @@ def main(argv=None):
     parser.add_argument('file_in', metavar='FILE_IN', type=str,
                         nargs='?', default='-',
                         help='Input file. If set to "-" then stdin is used '
-                        '(default: -)')
+                        '(default: %(default)s)')
     parser.add_argument('file_out', metavar='FILE_OUT', type=str,
                         nargs='?', default='-',
                         help='Output file. If set to "-" then stdout is used '
-                        '(default: -)')
+                        '(default: %(default)s)')
 
     parser.add_argument('-j', '--json', action='store_true',
                         help='If present, the output format will be forced to '