標籤:pymysql mysqldb python mysql
pymsql是Python中操作MySQL的模組,其使用方法和MySQLdb幾乎相同,但是mysqldb不支援Python3
下載安裝
pip3 install pymysql
使用操作1. 執行sql
#!/usr/bin/env python# -*- coding:utf-8 -*-import pymysql# 建立串連conn = pymysql.connect(host=‘127.0.0.1‘, port=3306, user=‘root‘, passwd=‘123456‘, db=‘test‘,charset=‘utf8‘)# 建立遊標cursor = conn.cursor()# 執行SQL,並返回收影響行數effect_row = cursor.execute("update hosts set host = ‘1.1.1.2‘")# 執行帶條件SQL,並返回受影響行數#effect_row = cursor.execute("update hosts set host = ‘1.1.1.2‘ where nid > %s", (1,))# 執行SQL,並返回受影響行數#effect_row = cursor.executemany("insert into hosts(host,color_id)values(%s,%s)", [("1.1.1.11",1),("1.1.1.11",2)])# 提交,不然無法儲存建立或者修改的資料conn.commit() # 擷取最新自增IDnew_id = cursor.lastrowid# 關閉遊標cursor.close()# 關閉串連conn.close()
2.擷取查詢資料
#!/usr/bin/env python# -*- coding:utf-8 -*-import pymysqlconn = pymysql.connect(host=‘127.0.0.1‘, port=3306, user=‘root‘, passwd=‘123‘, db=‘t1‘)cursor = conn.cursor()cursor.execute("select * from hosts")# 擷取第一行資料row_1 = cursor.fetchone()print(row_1)# 擷取前n行資料# row_2 = cursor.fetchmany(3)# 擷取所有資料row_3 = cursor.fetchall()cursor.close()conn.close()
3.fetch資料類型
關於預設擷取的資料是元祖類型,如果想要或者字典類型的資料,使用設定遊標為字典類型:
#!/usr/bin/env python# -*- coding:utf-8 -*-import pymysqlconn = pymysql.connect(host=‘127.0.0.1‘, port=3306, user=‘root‘, passwd=‘123‘, db=‘t1‘)# 遊標設定為字典類型cursor = conn.cursor(cursor=pymysql.cursors.DictCursor)r = cursor.execute("select * from hosts")result = cursor.fetchone()for k, v in result.items(): print(k,v)cursor.close()conn.close()
Python操作MySQL(一) PyMysql篇