代码如下

from sqlalchemy import create_engine


def table_exists(engine, table_name):  # 这个函数用来判断表是否存在
    with engine.connect() as con:
        sql = "show tables;"
        tables = con.execute(sql).fetchall() # 读取show tables;执行后的全部表名
        for table_col in tables:
            if table_name == table_col[0]:
                return True
        return False


if __name__ == '__main__':
    # engine = create_engine("mysql+pymysql://用户名:密码@127.0.0.1:3306/数据库名")
    engine = create_engine('mysql+pymysql://testuser:testpassword@localhost:3306/{}'.format("test_db"), encoding='utf8')
    if table_exists(engine, "test_csv"):
        print('存在')
    else:
        print('不存在')