[issue13922] argparse handling multiple "--" in args improperly
Steven Bethard
report at bugs.python.org
Sun Mar 18 22:41:39 CET 2012
Steven Bethard <steven.bethard at gmail.com> added the comment:
> It prevents implementing parsers that pass strings on to another
> sub-parser or command.
...
> wouldn't you use 'parse_known_args' instead of 'parse_args'
> and pass the remaining arguments to the next script
I'll just say again that the recommended way of passing arguments to another command is via nargs=argparse.REMAINDER. (Though you may still need "--" if the first argument in the remainder is a flag shared by your parser, as Warren Turka pointed out.)
> I really want "--" to mean "treat everything else as non-optional
> arguments"
Yep, and that's what it's intended to mean, and what the documentation says:
"you can insert the pseudo-argument '--' which tells parse_args() that everything after that is a positional argument"
http://docs.python.org/library/argparse.html#arguments-containing
It's therefore a bug if there's a '--' after the first '--', but it's not being treated as a positional argument.
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