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character set gobbledy-gook ascii translation ...

I'm parsing a file with the mailbox and email modules and
come across subject headers like:
=?us-ascii?Q?Re=3A=2 0=5Bosg=2Duser= 5D=20Culling=20 problem?=
=?gb2312?B?cXVl c3Rpb24gYWJvdXQ gbG9hZGluZyBmbH QgbGFyZ2UgdGVyc mFpbiA=?=

I've looked at the Charset class but can't figure out how to use it to
convert the above strings to a human readable form. Generally, I
imagine that
there is no guarantee that an encoded string can be rendered meaningfully
in ASCII - but these are posts to an English language mai list so it should
be possible for this restricted case.

I can guess the translation in the first example above but I'm
hoping there is a Python module that'll do it for me.

Any help is much appreciated.

Jul 18 '05 #1
1 2126
>>> email.Header.de code_header("=? us-ascii?Q?Re=3A=2 0=5Bosg=2Duser= 5D=20Culling=20 problem?=")
[('Re: [osg-user] Culling problem', 'us-ascii')]
email.Header.de code_header("=? gb2312?B?cXVlc3 Rpb24gYWJvdXQgb G9hZGluZyBmbHQg bGFyZ2UgdGVycmF pbiA=?=") [('question about loading flt large terrain ', 'gb2312')] help(email.Head er.decode_heade r)

Help on function decode_header:

decode_header(h eader)
Decode a message header value without converting charset.

Returns a list of (decoded_string , charset) pairs containing each of
the decoded parts of the header. Charset is None for non-encoded
parts of the header, otherwise a lower-case string containing the
name of the character set specified in the encoded string.

An email.Errors.He aderParseError may be raised when certain decoding
error occurs (e.g. a base64 decoding exception).


Version: GnuPG v1.2.6 (GNU/Linux)

iD8DBQFBzCp3Jd0 1MZaTXX0RAgK+AJ 40xiymdMBLvsexC NC4zmzEwqr16ACf XkZn
KZVYVeoCxuBx+Zx LVaG94uU=

Jul 18 '05 #2

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