ref: f5921b9e238b9c308b199a7e8e2b75becf058e9d
parent: fb1c5e2054eb859d412e1e28cb9c045c8219854c
author: Paul Brossier <piem@piem.org>
date: Sat Oct 27 14:43:43 EDT 2018
[cmd] [py2] workaround for -V to really show version
--- a/python/lib/aubio/cmd.py
+++ b/python/lib/aubio/cmd.py
@@ -499,7 +499,24 @@
def main():
parser = aubio_parser()
- args = parser.parse_args()
+ if sys.version_info[0] != 3:
+ # on py2, create a dummy ArgumentParser to workaround the
+ # optional subcommand issue. See https://bugs.python.org/issue9253
+ # This ensures that:
+ # - version string is shown when only '-V' is passed
+ # - help is printed if '-V' is passed with any other argument
+ # - any other argument get forwarded to the real parser
+ parser_root = argparse.ArgumentParser(add_help=False)
+ parser_root.add_argument('-V', '--version', help="show version",+ action="store_true", dest="show_version")
+ args, extras = parser_root.parse_known_args()
+ if args.show_version == False: # no -V, forward to parser
+ args = parser.parse_args(extras, namespace=args)
+ elif len(extras) != 0: # -V with other arguments, print help
+ parser.print_help()
+ sys.exit(1)
+ else: # in py3, we can simply use parser directly
+ args = parser.parse_args()
if 'show_version' in args and args.show_version:
sys.stdout.write('aubio version ' + aubio.version + '\n')sys.exit(0)