二.数据库游标对象cursor与实例

1.数据库游标对象cursor

2.select实例

代码展示：

 1 import pymysql
 2 conn=pymysql.connect(
 3     host='192.168.199.249',
 4     port=3306,
 5     user='root',
 6     passwd='123456',
 7     db='imooc',
 8     charset='utf8'
 9 )
10 cursor=conn.cursor()
11 
12 sql="select * from user"
13 cursor.execute(sql)
14 
15 rs=cursor.fetchall()
16 for row in rs:
17     print('userid=%s,username=%s'% row)
18 
19 cursor.close()
20 conn.close()