python之%s 设置正确但 PyMySQL 仍然提示 %d

我是 Python 的新手，我正在尝试创建一个表单，通过 PyMySQL 将数据保存到数据库，但我在连接到数据库时遇到了问题。我遵循了一个示例代码(我的版本在下面)并彻底检查了所有语法和语音标记，但仍然出现以下错误。

File "c:\Users\Nimrod\Nimrod Dropbox\Dropbox\Nimrodsky\Python\Adiabatic Equation\DB connect with PyMySQL.py", line 10, in <module> charset='utf8') 
File "C:\ProgramData\Anaconda3\lib\site-packages\pymysql\__init__.py", line 90, in Connect return Connection(*args, **kwargs) 
File "C:\ProgramData\Anaconda3\lib\site-packages\pymysql\connections.py", line 706, in __init__ self.connect() 
File "C:\ProgramData\Anaconda3\lib\site-packages\pymysql\connections.py", line 922, in connect self.host_info = "socket %s:%d" % (self.host, self.port) 
TypeError: %d format: a number is required, not str 

import pymysql 
import pymysql.cursors 
 
# Connect to the database 
connection = pymysql.connect(host='sql8.freesqldatabase.com',  
                            port='3306',  
                            user='********',  
                            password='**********',  
                            db='*********', 
                            charset='utf8') 
 
 
try: 
    with connection.cursor() as cursor: 
        # Create a new record 
        sql = "INSERT INTO `client` (`ID`, `client_name`, `client_address_1`, `client_address_2`, `client_address_3`, `client_postcode`, `occupier_name`, `install_address_1`, `install_address_2`, `install_address_3`, `install_postcode`) VALUES (%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)" 
        cursor.execute(sql, ('1', 'Terry Jones', '10 DOwning Street', 'Guildford','Surrey', 'GU1 5HA', 'Paul Smith', 'Wimbledon Hill', 'Wimbledon', 'London', 'SW19 5QT')) 
 
    #connection is not autocommit by default. So you must commit to save 
    #your changes. 
    connection.commit() 
 
    with connection.cursor() as cursor: 
        # Read a single record 
        sql = "SELECT `id`, `occupier_name` FROM `client` WHERE `client_name`=%s" 
        cursor.execute(sql, ('Terry Jones',)) 
        result = cursor.fetchone() 
        print (result) 
 
finally: 
    connection.close 

请您参考如下方法:

端口必须是整数:port=3306。