In Python, I'm using urllib2 to open a url. This url redirects to another url, which redirects to yet another url.
I wish to print out the url after each redirect.
For example
-> = redirects to
A -> B -> C -> D
I want to print the URL of B, C and D (A is already known because it's the start URL).
Wooble
Probably the best way is to subclass urllib2.HTTPRedirectHandler. Dive Into Python's chapter on redirects may be helpful.
You can easily get D by just asking for the current URL.
req = urllib2.Request(starturl, datagen, headers)
res = urllib2.urlopen(req)
finalurl = res.geturl()
To deal with the intermediate redirects you'll probably need to build your own opener, using HTTPRedirectHandler that records the redirects.
来源：https://stackoverflow.com/questions/4902523/how-to-get-the-url-of-a-redirect-with-python