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Enhance argparse example to show aliases.

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Raymond Hettinger 2010-12-18 09:41:32 +00:00
parent 52d1b4e62f
commit 3094ed8c69
1 changed files with 4 additions and 3 deletions
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Doc/whatsnew/3.2.rst
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@ -1,4 +1,4 @@
**************************** http://news.blogs.cnn.com/2010/12/17/final-lunar-eclipse-of-2010-set-for-early-morning-of-december-21/?hpt=T2http://news.blogs.cnn.com/2010/12/17/final-lunar-eclipse-of-2010-set-for-early-morning-of-december-21/?hpt=T2****************************
What's New In Python 3.2 What's New In Python 3.2
**************************** ****************************
@ -149,14 +149,15 @@ each with their own argument patterns and help displays::
parser_l.add_argument('-m', '--missiles', action='store_true') parser_l.add_argument('-m', '--missiles', action='store_true')
parser_l.add_argument('-t', '--torpedos', action='store_true') parser_l.add_argument('-t', '--torpedos', action='store_true')
parser_m = subparsers.add_parser('move', help='Move Vessel') # second subgroup parser_m = subparsers.add_parser('move', help='Move Vessel', # second subgroup
aliases=('steer', 'turn')) # equivalent names
parser_m.add_argument('-c', '--course', type=int, required=True) parser_m.add_argument('-c', '--course', type=int, required=True)
parser_m.add_argument('-s', '--speed', type=int, default=0) parser_m.add_argument('-s', '--speed', type=int, default=0)
$ ./helm.py --help # top level help (launch and move) $ ./helm.py --help # top level help (launch and move)
$ ./helm.py launch --help # help for launch options $ ./helm.py launch --help # help for launch options
$ ./helm.py launch --missiles # set missiles=True and torpedos=False $ ./helm.py launch --missiles # set missiles=True and torpedos=False
$ ./helm.py move --course 180 --speed 5 # set movement parameters $ ./helm.py steer --course 180 --speed 5 # set movement parameters
.. seealso:: .. seealso::