我试图运行这个program

conn = pymssql.connect(host='localhost',user='notsa',password='notsayly',database='TallicaTweets')

但我收到以下错误：

Traceback (most recent call last):
  File "harvester_of_tweets.py",line 11,in sql.connect(host='localhost',user='username',password='password!',database='Database')
  File "/usr/local/lib/python2.7/dist-packages/pymssql.py",line 607,in connect
    raise OperationalError,e[0]
pymssql.OperationalError: DB-Lib error message 20009,severity 9:
Unable to connect: Adaptive Server is unavailable or does not exist
Net-Lib error during Connection refused Error 111 - Connection refused

搜索Google并没有真正有用,而且那里的一些内容并不是很彻底.我应该将我的凭证添加到特定的配置文件中吗？以及如何在mssql中创建凭据？ (我在psql中做过这些事情但不熟悉mssql.

我正在使用Ubuntu 13.04 ad我的python版本是2.7.

创建用户登录后,我收到此错误：

Traceback (most recent call last):
  File "harvester_of_tweets.py",user='tweet',password='1234',database='tweet_db')
  File "/usr/local/lib/python2.7/dist-packages/pymssql.py",severity 9:
Unable to connect: Adaptive Server is unavailable or does not exist
Net-Lib error during Connection refused Error 111 - Connection refused