def test_append_newline():
    def check_append_newline(key):
        append_newline = len(key.split('.')) == 2
        return append_newline

    # 测试用例
    test_cases = ["1.1", "1."]

    for case in test_cases:
        result = check_append_newline(case)
        print(f"序号 '{case}': append_newline = {result}")

# 运行测试
test_append_newline()