python数据库操作

1.简单例子

#-*-coding:UTF-8-*-
import MySQLdb
db=MySQLdb.connect(host='localhost',user='root',passwd='root')  #成功则返回一个连接对象
cur=db.cursor()		#创建一个光标来执行sql语句
cur.execute('select version()') #执行SQL语句
row=cur.fetchone()	#得到一个结果元组
print 'server version:' ,row[0]
cur.close()
db.close()

2.例子二

#-*-coding:UTF-8-*-
import MySQLdb
import sys
db=MySQLdb.connect(host='localhost',user='root',passwd='root',db='chen')  #成功则返回一个连接对象
cursor=db.cursor()
cursor.execute('drop table if exists animal')
cursor.execute('create table animal(name   char(40),category char(40))')
cursor.execute("insert into animal(name,category) values ('snake','reptile'),('frog','amphibian')")
cursor.execute ("SELECT name, category FROM animal")
while (1):
	row = cursor.fetchone()
	if row == None:
		 break
	print "%s, %s" % (row[0], row[1])
print "Number of rows returned: %d" % cursor.rowcount
db.commit()
db.close()