python 连接数据库

 1 import pymysql
 2 
 3 
 4 def mysql_db(sql):
 5     # 连接数据库
 6     db = pymysql.Connect(host=‘47.**.***.245‘, port=3306, user=‘***‘, password=‘***‘, db=‘***‘,
 7                          charset=‘utf8‘)
 8     # 创建游标
 9     cursor = db.cursor()
10     # 执行sql
11     cursor.execute(sql)
12     # 接收sql执行结果
13     data = cursor.fetchall()
14     print(data)
15     for i in data:
16         print(i)
17     db.close()
18 
19 
20 if __name__ == ‘__main__‘:
21     sql = ‘select * from persion‘
22     mysql_db()