How to get the URL of a redirect with Python

For Python 3, the solution with urllib is much simpler:

import urllib


def resolve(url):
    return urllib.request.urlopen(url).geturl()

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.

Probably the best way is to subclass urllib2.HTTPRedirectHandler. Dive Into Python's chapter on redirects may be helpful.

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