TypeError：在字符串格式化过程中并非所有参数都被转换[MySQL DB连接]

Question

hostname = raw_input("Enter hostname : ")

connection = MySQLdb.connect (host = "localhost", user = "hawkhost_databas", passwd = "}MFkdDI6]#QX", db = "hawkhost_database")

cursor = connection.cursor ()

cursor.execute ("select User, Hostname, Password, Port from dbinfo where hostname=%s", (hostname))

Answer 1

cursor.execute（“从dbinfo中选择用户，主机名，密码，端口，其中Hostname ='％s'”％d）

这解决了问题