在ubuntu12.04下写了个简单的python测试代码：
-*- coding: UTF-8 -*-
import time,urllib2,urllib,StringIO,sys,os,multiprocessing,sqlite3
if name == '__main__':
stockUrl="http://www.baidu.com"
stockWeb = urllib.urlopen(stockUrl).read()
print stockWeb
但是出现了如下错误：
Traceback (most recent call last):
File "test.py", line 6, in
stockWeb = urllib.urlopen(stockUrl).read()
File "/usr/lib/python2.7/urllib.py", line 86, in urlopen
return opener.open(url)
File "/usr/lib/python2.7/urllib.py", line 207, in open
return getattr(self, name)(url)
File "/usr/lib/python2.7/urllib.py", line 344, in open_http
h.endheaders(data)
File "/usr/lib/python2.7/httplib.py", line 954, in endheaders
self._send_output(message_body)
File "/usr/lib/python2.7/httplib.py", line 814, in _send_output
self.send(msg)
File "/usr/lib/python2.7/httplib.py", line 776, in send
self.connect()
File "/usr/lib/python2.7/httplib.py", line 757, in connect
self.timeout, self.source_address)
File "/usr/lib/python2.7/socket.py", line 553, in create_connection
for res in getaddrinfo(host, port, 0, SOCK_STREAM):
IOError: [Errno socket error] [Errno -2] Name or service not known
GOOGLE了也没找到解决办法，这是什么问题？
另外，同样的代码吗，我在另一台同样环境机器上是可以运行的
