python基础教程之检查URL连接是否超时

#检查某个URL连接是否超时
import socket
import urllib2
 
def timeout(site, timeout):
    save = socket.getdefaulttimeout()
    try:
      response = urllib2.urlopen(site)
      socket.setdefaulttimeout(save)
    except urllib2.URLError, err:
      socket.setdefaulttimeout(save)
      if err.__class__.__name__ == "URLError":
        if isinstance(err[0], socket.timeout):
          return True
      return False
    if timeout("http://www.jb200.com/index.php", 10):
       print "Timeout detected"