Using proxies when impersonating HTTP requests in Python

In some cases it is necessary for us to set the proxy server when we request, under what circumstances we decide, then how to set the HTTP request agent?

Like Python automatically handles cookies, use urllib2. Build_opener to build.

1 ImportUrllib22 3Enable_proxy =True4Proxy_handler = Urllib2. Proxyhandler ({"http":'http://192.168.1.235:8080'})5Null_proxy_handler =Urllib2. Proxyhandler ({})6 7 ifEnable_proxy:8Opener =Urllib2.build_opener (Proxy_handler)9 Else:TenOpener =Urllib2.build_opener (Null_proxy_handler) One  AUrllib2.install_opener (opener)

Using Urllib2.install_opener () sets the global opener of the Urllib2 , which is handy for later use .

1 req=urllib2. Request (Url,encode_post_data (post_data))2 opener.open (req)

Using proxies when impersonating HTTP requests in Python