[Bug 1482303] Re: python 3.4.0's argparse ignores subcommand

[Matthias Klose]

that's won't fix upstream

** Changed in: python3-defaults (Ubuntu)
       Status: New => Won't Fix

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https://bugs.launchpad.net/bugs/1482303

Title:
  python 3.4.0's argparse ignores subcommand

Status in python3-defaults package in Ubuntu:
  Won't Fix

Bug description:
  Hi,

  take this simple example:

  ```
  #!/usr/bin/env python3
  import argparse

  def do_default(options):
      print("default")

  def do_build(options):
      print("build")

  if __name__ == '__main__':
      parser = argparse.ArgumentParser()
      subparsers = parser.add_subparsers()

      parser.set_defaults(func=do_default)

      build = subparsers.add_parser('build')
      build.set_defaults(func=do_build)

      options = parser.parse_args()
      options.func(options)
  ```

  On Ubuntu 14.04, without parameters it errors for missing command and
  with the parameter "build" it prints "default", so the subcommand gets
  ignored somehow.

  If running this on ubuntu 15.04, it works as expected: Without
  parameters, it prints "default". With the parameter "build" it prints
  "build".

  I couldn't track that to any upstream bug report, but it seems like a
  issue was fixed and the fix needs to get backported to ubuntu 14.04.

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