[issue11401] email.header error during .flatten()

[R. David Murray]

R. David Murray <rdmurray at bitdance.com> added the comment:

It turns out this is a bug in 3.1, not something introduced by email5.1 in 3.2.  The minimum reproducer is stringifying any message containing a header with no body.

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stage:  -> needs patch
versions: +Python 3.1

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue11401>
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