def get_parameters(parser, token):
    """
    {% get_parameters except_field %}
    """
    args = token.split_contents()
    if len(args) < 2:
        raise template.TemplateSyntaxError(
            "get_parameters tag takes at least 1 argument"
        )
    return GetParametersNode(args[1].strip())
{% get_parameters except_field %}