[Python-Dev] Pronouncement on PEP 389: argparse? (original) (raw)
Steven Bethard steven.bethard at gmail.com
Mon Dec 14 19:43:14 CET 2009
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On Mon, Dec 14, 2009 at 10:22 AM, Ian Bicking <ianb at colorstudy.com> wrote:
On Mon, Dec 14, 2009 at 12:04 PM, Steven Bethard <steven.bethard at gmail.com> wrote:
So there wasn't really any more feedback on the last post of the argparse PEP other than a typo fix and another +1. I just converted a script over to argparse. It seems nice enough, I was doing a two-level command, and it was quite handy for that. One concern I had is that the naming seems at times trivially different than optparse, just because "opt" or "option" is replaced by "arg" or "argument". So .addoption becomes .addargument, and OptionParser becomes ArgumentParser. This seems unnecessary to me, and it make converting the application harder than it had to be. It wasn't hard, but it could have been really easy. There are a couple other details like this that I think are worth resolving if argparse really is supposed to replace optparse.
Thanks for the feedback. Could you comment further on exactly what would be sufficient? It would be easy, for example, to add a subclass of ArgumentParser called OptionParser that has an add_option method. Do you also need the following things to work?
- options, args = parser.parse_args() # options and args aren't separate in argparse
- type='int', etc. # string type names aren't used in argparse
- action='store_false' default value is None # it's True in argparse
These latter kind of changes seem sketchier to me - they would make the initial conversion easier, but would make using argparse normally harder.
I'd change this language: "The optparse module is deprecated, and has been replaced by the argparse module." To: "The optparse module is deprecated and will not be developed further; development will continue with the argparse module"
Done. Thanks!
Steve
Where did you get that preposterous hypothesis? Did Steve tell you that? --- The Hiphopopotamus
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