      widget = widgets.DateInput
      form_field_class = forms.DateField
  
      default_error_messages = {
          'invalid': _(u"Date has wrong format. Use one of these formats instead: %s"),
      }
      empty = None
  
      def __init__(self, *args, **kwargs):
          self.format = kwargs.pop('format', settings.DATE_INPUT_FORMATS)
 
</s> remove         'invalid': _(u"Time has wrong format. Use one of these formats instead: %s"),
 </s> add         'invalid': _("Time has wrong format. Use one of these formats instead: %s"), </s> remove         'invalid': _(u"Datetime has wrong format. Use one of these formats instead: %s"),
 </s> add         'invalid': _("Datetime has wrong format. Use one of these formats instead: %s"),
        'invalid': _("Date has wrong format. Use one of these formats instead: %s"),
      widget = widgets.DateInput
      form_field_class = forms.DateField
  
      default_error_messages = {
        'invalid': _("Date has wrong format. Use one of these formats instead: %s"),
      }
      empty = None
  
      def __init__(self, *args, **kwargs):
          self.format = kwargs.pop('format', settings.DATE_INPUT_FORMATS)
keep keep keep keep replace keep keep keep keep keep
 Fix for python 3 support - thanks @Linovia 
rest_framework/fields.py