old_contents: import json
  import datetime
  from django.utils.encoding import force_unicode
  from django.utils.functional import Promise
  
  
  class LazyEncoder(json.JSONEncoder):
      """Taken from https://github.com/tomchristie/django-rest-framework/issues/87
      This makes sure that ugettext_lazy refrences in a dict are properly evaluated
      """
      def default(self, obj):
          if isinstance(obj, Promise):
              return force_unicode(obj)
          return super(LazyEncoder, self).default(obj)
  
new_contents: import json
  import datetime
  from decimal import Decimal
  from django.utils.encoding import force_unicode
  from django.utils.functional import Promise
  
  
  class DecimalEncoder(json.JSONEncoder):
      def default(self, obj):
          if isinstance(obj, Decimal):
              return str(obj)
          return super(DecimalEncoder, self).default(obj)
  
  
  class LazyEncoder(DecimalEncoder):
      """Taken from https://github.com/tomchristie/django-rest-framework/issues/87
      This makes sure that ugettext_lazy refrences in a dict are properly evaluated
      """
      def default(self, obj):
          if isinstance(obj, Promise):
              return force_unicode(obj)
          return super(LazyEncoder, self).default(obj)
  
subject: Fix for json encoding Decimal values