agent: add default for labels

9 years ago · 13a4fe85d3
parent a570f78cb3
commit 13a4fe85d3
1 changed files with 2 additions and 1 deletions
--- a/agent.py
+++ b/agent.py
@ -92,7 +92,8 @@ def serve(key_files, command, signer, sock_path=None):
 def main():
    fmt = '%(asctime)s %(levelname)-12s %(message)-100s [%(filename)s]'
    p = argparse.ArgumentParser()
-    p.add_argument('-k', '--key-label', dest='labels', action='append')
+    p.add_argument('-k', '--key-label',
+                   metavar='LABEL', dest='labels', action='append', default=[])
    p.add_argument('-v', '--verbose', action='count', default=0)
    p.add_argument('command', type=str, nargs='*')
    args = p.parse_args()