时间:2021-07-01 10:21:17 帮助过:23人阅读
论文实验涉及,主要是记个笔记,见谅!下面是测试代码(实现数据库、表建立、插入数据、查询数据、更新数据): # -*- coding: cp936 -*-import MySQLdbtry: conn=MySQLdb.connect(host=localhost,user=root,passwd=19900216) #conn=MySQLdb.connect(host=lo
论文实验涉及,主要是记个笔记,见谅!下面是测试代码(实现数据库、表建立、插入数据、查询数据、更新数据):
# -*- coding: cp936 -*- import MySQLdb try: conn=MySQLdb.connect(host='localhost',user='root',passwd='19900216') #conn=MySQLdb.connect(host='localhost',user='root',passwd='19900216',db='world') #print "conn=",conn; cur=conn.cursor() #print "cur=",cur; cur.execute('create database if not exists python') conn.select_db('python') cur.execute('create table test(id int,info varchar(20))') value=[1,'hi rollen'] cur.execute('insert into test values(%s,%s)',value) values=[] for i in range(9): values.append((i,'hi rollen'+str(i))) cur.executemany('insert into test values(%s,%s)',values) conn.commit() test=cur.execute('select * from test') print test #记录条数 result=cur.fetchone() print 'ID: %s info %s' %result results=cur.fetchmany(5) for r in results: print r cur.scroll(0,mode='absolute') results=cur.fetchall() for r in results: print r[1] cur.execute('update test set info="I am rollen" where id=3') conn.commit() cur.close() conn.close() except MySQLdb.Error,e: print "Mysql Error %d: %s" %(e.args[0],e.args[1])
代码注释:
代码中有很多类似xxxone、xxxmany,xxxmany的函数,作用比较好懂!
scroll(self,value,mode):移动指针到某一行。如果mode=‘relative’,则表示从当前所在行移动value条,如果mode=‘absolute’,表示从结果集的第一行移动value条
Q&A:
①Q:Mysql Notifier无法start mysql服务
A:进入Manage Items,删除服务后,再重新添加服务
②Q提示python、mysql不是内部或外部命令……,A:添加变量到PATH;
③Q安装MySQL-python时,出现错误.一般是因为缺少visual c++的东西,或者安装的是64位的python
A:安装提示所缺少的东西后,再安装MySQL-python;或者尝试安装MySQL-python-1.2.5.win-amd64-py2.7
参考资料:
http://blog.csdn.net/lishan9133/article/details/7024989
http://www.cr173.com/html/27032_1.html
http://www.cnblogs.com/fnng/p/4115607.html
http://blog.sina.com.cn/s/blog_82a927880102uwty.html
http://www.crifan.com/python_install_module_mysql_mysqldb/
http://www.cnblogs.com/rollenholt/archive/2012/05/29/2524327.html