python连接mysql失败怎么解决

db = MySQLdb.connect("localhost", "root", "mysqladmin", "testdb")

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)")

db = MySQLdb.connect("127.0.0.1", "root", "mysqladmin", "testdb")

#!\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()