new_contents: # -*- coding: utf-8 -*-
  # vim: set ts=
  
  from __future__ import unicode_literals
  
  from django.conf import settings
  from django.core.management.base import BaseCommand
  
  from optparse import make_option
  import yaml
  
  
  class Command(BaseCommand):
      args = None
      help = 'Collect the tags from the sub-directories'
      option_list = BaseCommand.option_list + (
          make_option('-p', '--pattern',
                      dest='pattern',
                      help='Pattern when matching the files',
                      default='*'),
      )
  
      def handle(self, *args, **kwargs):
          pattern = kwargs['pattern']
          new_tags = set(args)
  
          # Load the tags from the configuration
          local_tags = set()
          pattern_in_local = False
          try:
              with open('.DataTag.yaml', 'r') as local_conf:
                  local_conf = yaml.load(local_conf)
                  if pattern in local_conf:
                      pattern_in_local = True
                      for tag in local_conf[pattern]['tags']:
                          local_tags.add(tag)
          except IOError:
              print 'no such file or directory'
              pass
  
          # Add the tags that are missing in the configuration
          missing_tags = new_tags - local_tags
          if missing_tags:
              print("Adding missing tags")
              print("===================")
  
              if pattern_in_local:
                  print "TODO"
              else:
                  with open('.DataTag.yaml', 'a+') as local_conf:
                      if '*' in pattern or ':' in pattern:
                          local_conf.write("'%s':\n    tags:\n" % (pattern))
                      else:
                          local_conf.write("%s:\n    tags:\n" % (pattern))
                      for tag in missing_tags:
                          print(" - %s" % (tag))
                          local_conf.write("        - %s\n" % (tag))
          else:
              print("No missing tags")
  
subject: Add an helper to create the metadata for a dir