#!/usr/bin/env python# -*- coding:utf-8 -*-# __author__ = "blzhu""""python studyDate：2017"""import pymysql# import MySQLdb #python2中的产物try: # 获取一个数据库连接，注意如果是UTF-8类型的，需要制定数据库 conn = pymysql.connect(host='localhost', user='root', passwd='root', db='zbltest1', port=3306, charset='utf8') cur = conn.cursor() # 获取一个游标 for i in range(1, 10): zbl_id = str(i) zbl_name = 'zbl'+str(i) zbl_gender = 'man' # print("%s,%s,%s" % (zbl_id,zbl_name,zbl_gender)) # sql = "insert student VALUES (id='%s',name='%s',gender='%s')" % (zbl_id,zbl_name,zbl_gender) sql = "insert student VALUES ('%s','%s','%s')" % (zbl_id, zbl_name, zbl_gender) # print(sql) cur.execute(sql) conn.commit()# 将数据写入数据库 # try: # cur.execute(sql) # cur.commit() # except: # cur.rollback() #cur.execute("""INSERT INTO 'student' ('id','name','gender') VALUES (%s,%s,%s ,(zbl_id,zbl_name,zbl_gender,))""") #cur.execute("""INSERT INTO 'student' ('id','name','gender') VALUES (zbl_id,zbl_name,zbl_gender)""") # cur.execute("INSERT student VALUES (zbl_id,zbl_name,zbl_gender)") # cur.execute("INSERT student VALUES ('4', 'zbl4', 'man')")# 正确 #cur.execute("INSERT INTO 'student' ('id','name','gender') VALUES ('4', 'zbl4', 'man')")#错误 #cur.execute("INSERT student ('id','name','gender') VALUES ('4', 'zbl4', 'man')") cur.execute('select * from student') # data=cur.fetchall() for d in cur: # 注意int类型需要使用str函数转义 print("ID: " + str(d[0]) + ' 名字： ' + d[1] + " 性别： " + d[2]) print("row_number:", (cur.rownumber)) # print('hello') cur.close() # 关闭游标 conn.close() # 释放数据库资源except Exception: print("发生异常") 上面代码是对的，但是是曲折的。
下面整理一下：
1 #!/usr/bin/env python 2 # -*- coding:utf-8 -*- 3 # __author__ = "blzhu" 4 """ 5 python study 6 Date：2017 7 """ 8 import pymysql 9 try:10 # 获取一个数据库连接，注意如果是UTF-8类型的，需要制定数据库11 conn = pymysql.connect(host='localhost', user='root', passwd='root', db='zbltest1', port=3306, charset='utf8')12 cur = conn.cursor() # 获取一个游标13 for i in range(1, 10):14 zbl_id = str(i)15 zbl_name = 'zbl'+str(i)16 zbl_gender = 'man'17 # print("%s,%s,%s" % (zbl_id,zbl_name,zbl_gender))18 # sql = "insert student VALUES (id='%s',name='%s',gender='%s')" % (zbl_id,zbl_name,zbl_gender)19 sql = "insert student VALUES ('%s','%s','%s')" % (zbl_id, zbl_name, zbl_gender)20 # print(sql)21 cur.execute(sql)22 conn.commit()# 将数据写入数据库23 cur.execute('select * from student')24 # data=cur.fetchall()25 for d in cur:26 # 注意int类型需要使用str函数转义27 print("ID: " + str(d[0]) + ' 名字： ' + d[1] + " 性别： " + d[2])28 print("row_number:", (cur.rownumber))29 # print('hello')30 31 cur.close() # 关闭游标32 conn.close() # 释放数据库资源33 except Exception:34 print("发生异常") 学习的几个地方:
http://blog.csdn.net/nuli888/article/details/51960571
1 #!/usr/bin/python3 2 import pymysql 3 import types 4 5 db=pymysql.connect("localhost","root","123456","python"); 6 7 cursor=db.cursor() 8 9 #创建user表10 cursor.execute("drop table if exists user")11 sql="""CREATE TABLE IF NOT EXISTS `user` (12 `id` int(11) NOT NULL AUTO_INCREMENT,13 `name` varchar(255) NOT NULL,14 `age` int(11) NOT NULL,15 PRIMARY KEY (`id`)16 ) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=0"""17 18 cursor.execute(sql)19 20 21 #user插入数据22 sql="""INSERT INTO `user` (`name`, `age`) VALUES23 ('test1', 1),24 ('test2', 2),25 ('test3', 3),26 ('test4', 4),27 ('test5', 5),28 ('test6', 6);"""29 30 try:31 # 执行sql语句32 cursor.execute(sql)33 # 提交到数据库执行34 db.commit()35 except:36 # 如果发生错误则回滚37 db.rollback()38 39 40 #更新41 id=142 sql="update user set age=100 where id='%s'" % (id)43 try:44 cursor.execute(sql)45 db.commit()46 except:47 db.rollback()48 49 #删除50 id=251 sql="delete from user where id='%s'" % (id)52 try:53 cursor.execute(sql)54 db.commit()55 except:56 db.rollback()57 58 59 #查询60 cursor.execute("select * from user")61 62 results=cursor.fetchall()63 64 for row in results:65 name=row[0]66 age=row[1]67 #print(type(row[1])) #打印变量类型 68 69 print ("name=%s,age=%s" % \70 (age, name)) http://www.runoob.com/python/python-mysql.html
http://www.cnblogs.com/lei0213/p/6002921.html
http://blog.csdn.net/magicbreaker/article/details/41811519
http://blog.csdn.net/bwlab/article/details/51146640