连接数据库，使用下面语句报错：
db = MySQLdb.connect("localhost", "root", "mysqladmin", "testdb")报错：
Traceback (most recent call last):
File "E:/PycharmProjects/file/hello1.py", line 8, in <module>
db = MySQLdb.connect("localhost", "root", "mysqladmin", "testdb")
File "E:\Python27\lib\site-packages\MySQLdb\__init__.py", line 81, in Connect
return Connection(*args, **kwargs)
File "E:\Python27\lib\site-packages\MySQLdb\connections.py", line 187, in __init__
super(Connection, self).__init__(*args, **kwargs2)
_mysql_exceptions.OperationalError: (2003, "Can't connect to MySQL server on 'localhost' (10061)")相关推荐：《Python教程》
解决办法：将localhost 改为 127.0.0.1 即可。
db = MySQLdb.connect("127.0.0.1", "root", "mysqladmin", "testdb")下面是完整的连接程序：
#!\usr\bin\python
# coding=utf-8
import MySQLdb #已经安装上了二进制版数据库
#打开数据库连接
#这样子写是OK的 ： db = MySQLdb.connect(host="127.0.0.1", port=3306, user="root", passwd="mysqladmin", db="testdb")
# 这样子写，会报错：db = MySQLdb.connect("localhost", "root", "mysqladmin", "testdb")
db = MySQLdb.connect("127.0.0.1", "root", "mysqladmin", "testdb")#这样子写是OK的
#使用cursor方法获取操作游标
cursor = db.cursor()
#使用execute 方法执行sql语句
cursor.execute("select version()")
#使用fetchone()方法获取一条数据库
data = cursor.fetchone()
print "datebase version : %s"%data
#关闭数据库连接
db.close()
