Jay Deiman added the comment:
I actually just worked around this issue in my library to do specifically what I needed it to do, which was an automatic redirect POST with data. As far as general recipes are concerned, anyone could just follow what I did in my library at:
https://github.com/crustymonkey/py-sonic or
http://pypi.python.org/pypi/py-sonic
All I did was just subclass HTTPRedirectHandler and essentially add my patch.
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Python tracker
http://bugs.python.org/issue14338
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