New submission from Sebastian Kreft:
The return type of email.header.decode_header is not consistent. When there are
encoded parts the return type is a list of (bytes, charset or None) (Note that
the documentation says it is a list of (str, charset)). However, when there are
no encoded parts the return type is [(str, None)]. Note that, at the end of the
function, there is a routine that converts everything to bytes.
Compare:
In [01]: email.header.decode_header('=?UTF-8?Q?foo?=bar')
Out[01]: [(b'foo', 'utf-8'), (b'bar', None)]
In [02]: email.header.decode_header('foobar')
Out[02]: [('foobar', None)]
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messages: 248047
nosy: Sebastian Kreft
priority: normal
severity: normal
status: open
title: email.header.decode_header return type is not consistent
versions: Python 3.4, Python 3.5, Python 3.6
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue24797>
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