text: # Python
  from collections import OrderedDict
  import json
  
  # Django
  from django.conf import settings
  from django.utils.encoding import smart_str
  from django.utils.translation import ugettext_lazy as _
  
  # Django REST Framework
  from rest_framework import parsers
  from rest_framework.exceptions import ParseError
  
  
  class JSONParser(parsers.JSONParser):
      """
      Parses JSON-serialized data, preserving order of dictionary keys.
      """
  
      def parse(self, stream, media_type=None, parser_context=None):
          """
          Parses the incoming bytestream as JSON and returns the resulting data.
          """
          parser_context = parser_context or {}
          encoding = parser_context.get('encoding', settings.DEFAULT_CHARSET)
  
          try:
              data = smart_str(stream.read(), encoding=encoding)
              if not data:
                  return {}
              obj = json.loads(data, object_pairs_hook=OrderedDict)
              if not isinstance(obj, dict) and obj is not None:
                  raise ParseError(_('JSON parse error - not a JSON object'))
              return obj
          except ValueError as exc:
              raise ParseError(_('JSON parse error - %s\nPossible cause: trailing comma.' % str(exc)))
  