def p_append(p):
    """
    kw_arguments : kw_arguments kw_argument
    statements : statements statement
    conditions : conditions condition
    pos_arguments : pos_arguments primary
    kw_parameter_types : kw_parameter_types kw_parameter_type
    parameter_types_list1 : parameter_types_list1 simple_type
    action_statements : action_statements simple_statement newlines
    action_statements : action_statements continue newlines
    native_elements : native_elements native_element
    dotted_prefix : dotted_prefix IDENT '.'
    """
    p[0] = p[1] + (p[2],)
