check status proxy address

Often we need to use proxy addresses in our web spiders / crawler. But most of the time the proxies don't work. So I made a little python program to test the proxy IPs. Let's look into the code:

import urllib2, socket

socket.setdefaulttimeout(180)

# read the list of proxy IPs in proxyList
proxyList = ['125.76.226.9:80', '213.55.87.162:6588'] # there are two sample proxy ip

for item in proxyList:
    if is_bad_proxy(item):
        print "Bad Proxy", item
    else
        print item, "is working"
    

def is_bad_proxy(pip):    
    try:        
        proxy_handler = urllib2.ProxyHandler({'http': pip})        
        opener = urllib2.build_opener(proxy_handler)
        opener.addheaders = [('User-agent', 'Mozilla/5.0')]
        urllib2.install_opener(opener)        
        req=urllib2.Request('http://www.your-domain.com')  # change the url address here
        sock=urllib2.urlopen(req)
    except urllib2.HTTPError, e:        
        print 'Error code: ', e.code
        return e.code
    except Exception, detail:

        print "ERROR:", detail
        return 1
    return 0

Hope the proxy checker will be useful to you!
You can use this list to test your script.