Fixed #10080: `call_command` now takes option defaults into account, sparing...

import os

import sys

from optparse import OptionParser

from optparse import OptionParser, NO_DEFAULT

import imp

import django

        call_command('shell', plain=True)

        call_command('sqlall', 'myapp')

    """

    # Load the command object.

    try:

        app_name = get_commands()[name]

        if isinstance(app_name, BaseCommand):

            klass = load_command_class(app_name, name)

    except KeyError:

        raise CommandError, "Unknown command: %r" % name

    return klass.execute(*args, **options)

    # Grab out a list of defaults from the options. optparse does this for us

    # when the script runs from the command line, but since call_command can 

    # be called programatically, we need to simulate the loading and handling

    # of defaults (see #10080 for details).

    defaults = dict([(o.dest, o.default)

                     for o in klass.option_list 

                     if o.default is not NO_DEFAULT])

    defaults.update(options)

    return klass.execute(*args, **defaults)

class LaxOptionParser(OptionParser):

    """

from optparse import make_option

from django.core.management.base import BaseCommand

class Command(BaseCommand):

    args = ''

    requires_model_validation = True

    option_list =[

        make_option("-s", "--style", default="Rock'n'Roll")

    ]

    def handle(self, *args, **options):

        print "I don't feel like dancing."

 No newline at end of file

        print "I don't feel like dancing %s." % options["style"]

>>> from django.core import management

# Invoke a simple user-defined command

>>> management.call_command('dance')

I don't feel like dancing.

>>> management.call_command('dance', style="Jive")

I don't feel like dancing Jive.

# Invoke a command that doesn't exist

>>> management.call_command('explode')

...

CommandError: Unknown command: 'explode'

# Invoke a command with default option `style`

>>> management.call_command('dance')

I don't feel like dancing Rock'n'Roll.

"""}