Re: [Django] #27247: Official way to create custom admin commands with subcommands in py2 / py3

2016-09-19 Thread Django 
#27247: Official way to create custom admin commands with subcommands in py2 / 
py3
-+-
 Reporter:  stephanm |Owner:  nobody
 Type:  Bug  |   Status:  closed
Component:  Core (Management |  Version:  1.10
  commands)  |
 Severity:  Normal   |   Resolution:  invalid
 Keywords:   | Triage Stage:
 |  Unreviewed
Has patch:  0|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by timgraham):

 * status:  new => closed
 * needs_better_patch:   => 0
 * resolution:   => invalid
 * needs_tests:   => 0
 * needs_docs:   => 0


Comment:

 It's better to ask "is it a bug?" questions on our support channels. See
 TicketClosingReasons/UseSupportChannels. I'm not aware of any
 documentation about subcommands. Maybe it makes sense to add something.
 I'm not sure if that topic is a more Python related than Django related
 though. If you learn something, think it's appropriate for the Django
 docs, and want to write it up, feel free to open a ticket.

--
Ticket URL: 
Django 
The Web framework for perfectionists with deadlines.

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[Django] #27247: Official way to create custom admin commands with subcommands in py2 / py3

2016-09-19 Thread Django 
#27247: Official way to create custom admin commands with subcommands in py2 / 
py3
+
 Reporter:  stephanm|  Owner:  nobody
 Type:  Bug | Status:  new
Component:  Core (Management commands)  |Version:  1.10
 Severity:  Normal  |   Keywords:
 Triage Stage:  Unreviewed  |  Has patch:  0
Easy pickings:  0   |  UI/UX:  0
+
 Hi,

 I found a example on the internet showing how to create  custom admin
 commands with subcommands.

 My app is named "repo", I use django 1.10.1 on Windows and I am just
 trying
 to migrate from python 2.7.12 (32bit) to python 3.5.2 (64bit) on windows 7
 64bit.

 I did also a big switch from optparse to argparse since optparse is gone
 in django 1.10.

 The file repo_sample.py looks like:
 {{{#!py
 # -*- coding: utf-8 -*-
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 from django.core.management.base import BaseCommand
 import argparse


 class Command(BaseCommand):

 help = "this is a sample"

 def handle(self, *args, **options):
 if "command" in options:
 print("command: %s" % options["command"])
 else:
 print("no command")

 def add_arguments(self, parser):
 parser.formatter_class = argparse.RawDescriptionHelpFormatter
 subparsers = parser.add_subparsers(metavar='command',
dest='command',
help='sub-command help')
 parent_parser = argparse.ArgumentParser(add_help=False)

 subparsers.add_parser("command_1", parents=[parent_parser],
 cmd=self,
   help="This is command_1 no subcommands")
 parser_service = subparsers.add_parser("service",
 parents=[parent_parser], cmd=self,
help="Manage a windows
 service")
 parser_service.add_argument("serviceCmd", choices=["install",
 "delete", "start", "stop", "status"],
  help="Create or deletes a windows
 service..")

 }}}

 Now there is a difference if I run it with python 2 or python 3:
 {{{
 D:\util>manage.py repo_sample
 2.7.12 (v2.7.12:d33e0cf91556, Jun 27 2016, 15:19:22) [MSC v.1500 32 bit
 (Intel)]
 usage: manage.py repo_sample [-h] [--version] [-v {0,1,2,3}]
  [--settings SETTINGS] [--pythonpath
 PYTHONPATH]
  [--traceback] [--no-color]
  command ...
 manage.py repo_sample: error: too few arguments

 D:\util>py -3 manage.py repo_sample
 3.5.2 (v3.5.2:4def2a2901a5, Jun 25 2016, 22:18:55) [MSC v.1900 64 bit
 (AMD64)]
 command: None

 D:\util>
 }}}

 As you see, the first call with python 2 gives an error while the python 3
 call behaves differently,
 but I think it should at least behave the same way (so I marked it as
 bug).

 Now I am not sure if argparse behaves differently between python 2.7 and
 python 3.5 and if I made an error.

 But here is my question(s):

  - What is the official ("correct") way to create  custom admin commands
 with subcommands?
  - Do you have some examples in the docs? (I didnt find something)

--
Ticket URL: 
Django 
The Web framework for perfectionists with deadlines.

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