In [1]: from rest_framework import serializersIn [2]: class Foo(serializers.Serializer):    items = serializers.ListSerializer(child=serializers.IntegerField())   ...:     In [3]: s = Foo({'items': [1, 2, 3]})In [4]: s.data---------------------------------------------------------------------------TypeError                                 Traceback (most recent call last)<ipython-input-4-b0eddb6f5f12> in <module>()----> 1 s.data.../rest_framework/serializers.pyc in data(self)    420     @property    421     def data(self):--> 422         ret = super(Serializer, self).data    423         return ReturnDict(ret, serializer=self)    424 .../rest_framework/serializers.pyc in data(self)    175         if not hasattr(self, '_data'):    176             if self.instance is not None and not getattr(self, '_errors', None):--> 177                 self._data = self.to_representation(self.instance)    178             elif hasattr(self, '_validated_data') and not getattr(self, '_errors', None):    179                 self._data = self.to_representation(self.validated_data).../rest_framework/serializers.pyc in to_representation(self, instance)    389                 ret[field.field_name] = None    390             else:--> 391                 ret[field.field_name] = field.to_representation(attribute)    392     393         return ret.../rest_framework/serializers.pyc in to_representation(self, data)    520         iterable = data.all() if (hasattr(data, 'all')) else data    521         return [--> 522             self.child.to_representation(item) for item in iterable    523         ]    524 TypeError: 'builtin_function_or_method' object is not iterable

fields.py  62         try:                                                                      63             instance = getattr(instance, attr)                                    64         except ObjectDoesNotExist:                                                65             return None                                                           66         except AttributeError as exc:                                             67             try:                                                                  68                 return instance[attr]                                             69             except (KeyError, TypeError, AttributeError):                         70                 raise exc