本模塊爲python第三方模塊,須要單獨安裝。做用爲調用mysql接口執行模塊python
pip3 install pyMySqlmysql
一、執行SQLsql
1 #!/usr/bin/env python 2 # -*- coding:utf-8 -*- 3 import pymysql 4 5 # 建立鏈接 6 conn = pymysql.connect(host='127.0.0.1', port=3306, user='root', passwd='123', db='t1') 7 # 建立遊標 8 cursor = conn.cursor() 9 10 # 執行SQL,並返回收影響行數 11 effect_row = cursor.execute("update hosts set host = '1.1.1.2'") 12 13 # 執行SQL,並返回受影響行數 14 #effect_row = cursor.execute("update hosts set host = '1.1.1.2' where nid > %s", (1,)) 15 16 # 執行SQL,並返回受影響行數 17 #effect_row = cursor.executemany("insert into hosts(host,color_id)values(%s,%s)", [("1.1.1.11",1),("1.1.1.11",2)]) 18 19 20 # 提交,否則沒法保存新建或者修改的數據 21 conn.commit() 22 23 # 關閉遊標 24 cursor.close() 25 # 關閉鏈接 26 conn.close()
二、獲取新建立數據自增IDide
1 #!/usr/bin/env python 2 # -*- coding:utf-8 -*- 3 import pymysql 4 5 conn = pymysql.connect(host='127.0.0.1', port=3306, user='root', passwd='123', db='t1') 6 cursor = conn.cursor() 7 cursor.executemany("insert into hosts(host,color_id)values(%s,%s)", [("1.1.1.11",1),("1.1.1.11",2)]) 8 conn.commit() 9 cursor.close() 10 conn.close() 11 12 # 獲取最新自增ID 13 new_id = cursor.lastrowid
三、獲取查詢數據fetch
1 #!/usr/bin/env python 2 # -*- coding:utf-8 -*- 3 import pymysql 4 5 conn = pymysql.connect(host='127.0.0.1', port=3306, user='root', passwd='123', db='t1') 6 cursor = conn.cursor() 7 cursor.execute("select * from hosts") 8 9 # 獲取第一行數據 10 row_1 = cursor.fetchone() 11 12 # 獲取前n行數據 13 # row_2 = cursor.fetchmany(3) 14 # 獲取全部數據 15 # row_3 = cursor.fetchall() 16 17 conn.commit() 18 cursor.close() 19 conn.close()
注:在fetch數據時按照順序進行,能夠使用cursor.scroll(num,mode)來移動遊標位置,如:spa
四、fetch數據類型code
關於默認獲取的數據是元祖類型,若是想要或者字典類型的數據,即:blog
1 #!/usr/bin/env python 2 # -*- coding:utf-8 -*- 3 import pymysql 4 5 conn = pymysql.connect(host='127.0.0.1', port=3306, user='root', passwd='123', db='t1') 6 7 # 遊標設置爲字典類型 8 cursor = conn.cursor(cursor=pymysql.cursors.DictCursor) 9 r = cursor.execute("call p1()") 10 11 result = cursor.fetchone() 12 13 conn.commit() 14 cursor.close() 15 conn.close()