code: def call_command(name, *args, **options):
      
      # Load the command object.
      try:
          app_name = get_commands()[name]
      except KeyError:
          raise CommandError("Unknown command: %r" % name)
  
      if isinstance(app_name, BaseCommand):
          # If the command is already loaded, use it directly.
          command = app_name
      else:
          command = load_command_class(app_name, name)
  
      # Simulate argument parsing to get the option defaults (see #10080 for details).
      parser = command.create_parser('', name)
      if command.use_argparse:
          defaults = parser.parse_args(args=args)
          defaults = dict(defaults._get_kwargs(), **options)
      else:
          # Legacy optparse method
          defaults, _ = parser.parse_args(args=[])
          defaults = dict(defaults.__dict__, **options)
  
      return command.execute(*args, **defaults)
docs: Calls the given command, with the given options and args/kwargs.
  
      This is the primary API you should use for calling specific commands.
  
      Some examples:
          call_command('syncdb')
          call_command('shell', plain=True)
          call_command('sqlall', 'myapp')