      )
  
      def __init__(self, read_only=False, write_only=False,
                   required=None, default=empty, initial=None, source=None,
                   label=None, style=None):
          self._creation_counter = Field._creation_counter
          Field._creation_counter += 1
  
          # If `required` is unset, then use `True` unless a default is provided.
          if required is None:
 
</s> remove     def __init__(self, *args, **kwargs):
 </s> add     def __init__(self, **kwargs): </s> remove             # if model_field.help_text is not None:
            #     kwargs['help_text'] = model_field.help_text
 </s> add             #  if model_field.help_text is not None:
            #      kwargs['help_text'] = model_field.help_text </s> remove     #_hyperlink_field_class = HyperlinkedRelatedField
    #_hyperlink_identify_field_class = HyperlinkedIdentityField
 </s> add     # _hyperlink_field_class = HyperlinkedRelatedField
    # _hyperlink_identify_field_class = HyperlinkedIdentityField </s> remove     def __init__(self, *args, **kwargs):
 </s> add     def __init__(self, **kwargs): </s> remove         super(CharField, self).__init__(*args, **kwargs)
 </s> add         self.max_length = kwargs.pop('max_length', None)
        self.min_length = kwargs.pop('min_length', None)
        super(CharField, self).__init__(**kwargs)
                 label=None, style=None, error_messages=None):
      )
  
      def __init__(self, read_only=False, write_only=False,
                   required=None, default=empty, initial=None, source=None,
                 label=None, style=None, error_messages=None):
          self._creation_counter = Field._creation_counter
          Field._creation_counter += 1
  
          # If `required` is unset, then use `True` unless a default is provided.
          if required is None:
keep keep keep keep replace keep keep keep keep keep
 Add relations and get tests running 
rest_framework/fields.py