为什么对元组元素进行判断会和想象的结果不一致？

    db = pymysql.connect(host='192.168.89.41', user='root', passwd='root123', port=3306)
    cur = db.cursor()

    try:
        cur.execute('show databases;')
        data = cur.fetchall()

        result1 = "('mysql',)" in data
        result2 = "mysql" in data
        result3 = "(\'mysql\'\,)" in data
        result4 = "(\'mysql\',)" in data
        print(data)
        print(result1)

    except:
        print("操作 Mysql 失败")

print(data)的输出：

(('information_schema',), ('forum',), ('mysql',), ('mytest',), ('netdisk',), ('network',), ('save_sth',))

print(data[2])

('mysql',)

result1 到 4 的方式都是 False，我错在哪里？