def rectify_multipart_form_data(self, data):
for name, field in self.base_fields.items():<EOL><INDENT>try:<EOL><INDENT>field.implode_multi_values(name, data)<EOL><DEDENT>except AttributeError:<EOL><INDENT>pass<EOL><DEDENT><DEDENT>return data<EOL>
If a widget was converted and the Form data was submitted through a multipart request,
then these data fields must be converted to suit the Django Form validation