_list
            if key1 is None and key2 is None:
                call = _get_call_string(search_name)
                is_instance_call = _get_call_string(arglist.children[0])
                # Do a simple get_code comparison of the strings . They should
                # just have the same code, and everything will be all right.
                # There are ways that this is not correct, if some stuff is
                # redefined in between. However here we don't care, because
                # it's a heuristic that works pretty well.
                if call == is_instance_call:
                    lazy_cls = lazy_value_cls
    if lazy_cls is None:
        return None

    value_set = NO_VALUES
    for cls_or_tup in lazy_cls.infer():
        if isinstance(cls_or_tup, iterable.Sequence) and cls_or_tup.array_type == 'tuple':
            for lazy_value in cls_or_tup.py__iter__():
                value_set |= lazy_value.infer().execute_with_values()
        else:
            value_set |= cls_or_tup.execute_with_values()
    return value_set


def _get_call_string(node):
    if node.parent.type == 'atom_expr':
        return _get_call_string(node.parent)

    code = ''
    leaf = node.get_first_leaf()
    end = node.get_last_leaf().end_pos
    while leaf.start_pos < end:
        code += leaf.value
        leaf = leaf.get_next_leaf()
    return code
PK