本文为大家分享了Python3.6操作Mysql数据库的具体实例，供大家参考，具体内容如下
安装pymysql
参考https://github.com/PyMySQL/PyMySQL/
|
1
|
pip install pymsql |
实例一
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
import pymysql# 创建连接# 参数依次对应服务器地址，用户名，密码，数据库conn = pymysql.connect(host='127.0.0.1', user='root', passwd='123456', db='demo')# 创建游标cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)# 执行语句返回影响的行数effect_row = cursor.execute("select * from course")print(effect_row)# 获取所有数据result = cursor.fetchall()result = cursor.fetchone() # 获取下一个数据result = cursor.fetchone() # 获取下一个数据（在上一个的基础之上）# cursor.scroll(-1, mode='relative') # 相对位置移动# cursor.scroll(0,mode='absolute') # 绝对位置移动# 提交，不然无法保存新建或者修改的数据conn.commit()# 关闭游标cursor.close()# 关闭连接conn.close() |
实例二
|
1
2
3
4
5
6
7
8
9
10
11
12
|
import pymysql# 建立连接conn = pymysql.connect(host='127.0.0.1', user='root', passwd='123456', db='demo')# 创建游标cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)# 插入一条数据 %s是占位符 占位符之间用逗号隔开effect_row = cursor.execute("insert into course(cou_name,time) values(%s,%s)", ("Engilsh", 100))print(effect_row)conn.commit()cursor.close()conn.close() |
实例三
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
import pymysql.cursors# Connect to the databaseconnection = pymysql.connect(host='localhost', user='user', password='passwd', db='db', charset='utf8mb4', cursorclass=pymysql.cursors.DictCursor)try: with connection.cursor() as cursor: # Create a new record sql = "INSERT INTO `users` (`email`, `password`) VALUES (%s, %s)" cursor.execute(sql, ('webmaster@python.org', 'very-secret')) # 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`, `password` FROM `users` WHERE `email`=%s" cursor.execute(sql, ('webmaster@python.org',)) result = cursor.fetchone() print(result)finally: connection.close() |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：http://blog.csdn.net/qq_14998713/article/details/77940886
