Author maker
Recipients maker
Date 2012-03-18.14:29:12
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Message-id <1332080953.55.0.495639573781.issue14364@psf.upfronthosting.co.za>
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Content
http://docs.python.org/library/argparse.html#arguments-containing 
The attached file shows different behaviours when using '--' immediately after an optional argument.

tumbolandia:cpython maker$ python foo.py --test=-- foo 
[]
tumbolandia:cpython maker$ python foo.py --test -- foo 
usage: foo.py [-h] [-t TEST] [yuri]
foo.py: error: argument -t/--test: expected 1 argument(s)

The same is for single-dash arguments.

tumbolandia:cpython maker$ python foo.py -t -- foo
usage: foo.py [-h] [-t TEST] [yuri]
foo.py: error: argument -t/--test: expected 1 argument(s)
tumbolandia:cpython maker$ python foo.py -t-- foo
[]

Obviously argparse should return an error in both cases.
The  bug is probably due to Lib/argparser.py:2211
History
Date User Action Args
2012-03-18 14:29:13makersetrecipients: + maker
2012-03-18 14:29:13makersetmessageid: <1332080953.55.0.495639573781.issue14364@psf.upfronthosting.co.za>
2012-03-18 14:29:12makerlinkissue14364 messages
2012-03-18 14:29:12makercreate