Python 操作mysql

pip3 install pymysql

python -m pip install --upgrade pip

 1 import pymysql
 2   
 3 # 创建连接
 4 conn = pymysql.connect(host=‘127.0.0.1‘, port=3306, user=‘root‘, passwd=‘123‘, db=‘t1‘)
 5 # 创建游标
 6 cursor = conn.cursor()
 7   
 8 # 执行SQL，并返回收影响行数  effect_row可打印
 9 effect_row = cursor.execute("update hosts set host = ‘1.1.1.2‘")
10   
11 # 执行SQL，并返回受影响行数
12 # effect_row = cursor.execute("update hosts set host = ‘1.1.1.2‘ where nid > %s", (1,))
13   
14 # 执行SQL，并返回受影响行数
15 # effect_row = cursor.executemany("insert into hosts(host,color_id)values(%s,%s)", [("1.1.1.11",1),("1.1.1.11",2)])
16   
17   
18 # 提交，不然无法保存新建或者修改的数据
19 conn.commit()
20   
21 # 关闭游标
22 cursor.close()
23 # 关闭连接
24 conn.close()

 1 import pymysql
 2   
 3 conn = pymysql.connect(host=‘127.0.0.1‘, port=3306, user=‘root‘, passwd=‘123‘, db=‘t1‘)
 4 cursor = conn.cursor()
 5 cursor.executemany("insert into hosts(host,color_id)values(%s,%s)", [("1.1.1.11",1),("1.1.1.11",2)])
 6 conn.commit()
 7 cursor.close()
 8 conn.close()
 9   
10 # 获取最新自增ID
11 new_id = cursor.lastrowid

 1 import pymysql
 2   
 3 conn = pymysql.connect(host=‘127.0.0.1‘, port=3306, user=‘root‘, passwd=‘123‘, db=‘t1‘)
 4 cursor = conn.cursor()
 5 cursor.execute("select * from hosts")
 6   
 7 # 获取第一行数据
 8 row_1 = cursor.fetchone()
 9   
10 # 获取前n行数据
11 # row_2 = cursor.fetchmany(3)
12 # 获取所有数据
13 # row_3 = cursor.fetchall()
14   
15 conn.commit()
16 cursor.close()
17 conn.close()

 1 import pymysql
 2   
 3 conn = pymysql.connect(host=‘127.0.0.1‘, port=3306, user=‘root‘, passwd=‘123‘, db=‘t1‘)
 4   
 5 # 游标设置为字典类型
 6 cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)
 7 r = cursor.execute("call p1()")
 8   
 9 result = cursor.fetchone()
10   
11 conn.commit()
12 cursor.close()
13 conn.close()