[issue8572] httplib getheader() throws error instead of default

[David Stanek]

David Stanek <dstanek at dstanek.com> added the comment:

I created some tests for the existing behavior and the expected behavior. One of my apps was passing in a tuple and the default. Since this already worked and there are probably others besides me expecting this behavior I changed the patch to handle this.

The new patch treats any non-string value as an iterable and performs a ', '.join() on it. This is basically the old behavior.

This patch is against the py3k branch.

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nosy: +dstanek
Added file: http://bugs.python.org/file18299/8572.diff

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