[issue10574] email.header.decode_header fails if the string contains multiple directives
Roy Hyunjin Han added the comment:
Currently using the following workaround.
import re
import email.header
def decodeSafely(x):
match = re.search('(=\?.*?\?B\?)', x)
if not match:
return x
encoding = match.group(1)
return email.header.decode_header('%s%s==?=' % (encoding,
x.replace(encoding, '').replace('?', '').replace('=', '')))
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[issue10574] email.header.decode_header fails if the string contains multiple directives
Roy Hyunjin Han added the comment:
Improved workaround to handle another degenerate case where the encoded string
is in between non-encoded strings.
import re
import email.header
pattern_ecre = re.compile(r'((=\?.*?\?[qb]\?).*\?=)', re.VERBOSE |
re.IGNORECASE | re.MULTILINE)
def decodeSafely(x):
match = pattern_ecre.search(x)
if not match:
return x
string, encoding = match.groups()
stringBefore, string, stringAfter = x.partition(string)
return stringBefore + email.header.decode_header('%s%s==?=' % (encoding,
string.replace(encoding, '').replace('?', '').replace('=', '')))[0][0] +
stringAfter
print
decodeSafely('=?UTF-8?B?MjAxMSBBVVRNIENBTEwgZm9yIE5PTUlO?==?UTF-8?B?QVRJT05TIG9mIFZQIGZvciBNZW1iZXJz?==?UTF-8?B?aGlw?=')
print decodeSafely('"=?UTF-8?B?QVVUTSBIZWFkcXVhcnRlcnM=?="')
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[issue10574] email.header.decode_header fails if the string contains multiple directives
Roy Hyunjin Han added the comment:
The following code seems to solve the first case just as well. It seems that
it is a problem of missing whitespace.
email.header.decode_header('=?UTF-8?B?MjAxMSBBVVRNIENBTEwgZm9yIE5PTUlO?==?UTF-8?B?QVRJT05TIG9mIFZQIGZvciBNZW1iZXJz?==?UTF-8?B?aGlw?='.replace('?==?',
'?= =?'))
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[issue10574] email.header.decode_header fails if the string contains multiple directives
Roy Hyunjin Han added the comment: 2010/11/30 R. David Murray : > Out of curiosity, which email program is it that is producing these invalid > headers? I lost the headers for the original email, so I don't know which email program created the invalid headers. On searching for messages from the same address, it seems most of the messages originate from a marketing company called informz.net, but in rare instances there is a non-standard X-Mailer header: - ColdFusion 8 Application Server (via JavaMail) - IBM Lotus Domino Access for MS Outlook (2003) Release 7.0.2 September 26, 2006 Messages sent via informz.net generally parse correctly, so I am guessing it might have been one of the X-Mailers above. -- ___ Python tracker <http://bugs.python.org/issue10574> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue10574] email.header.decode_header fails if the string contains multiple directives
Roy Hyunjin Han added the comment: > This is fixed by the fix to issue 1079, but we have decided that fix can't be > backported because it is a behavior change that might break existing working > programs. Thanks for this update. -- ___ Python tracker <http://bugs.python.org/issue10574> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1598] unexpected response in imaplib
Roy Hyunjin Han added the comment: Is imaplib choking on the IBM-specific X-MIMETrack header? Is Lotus Notes properly formatting the multi-line headers? Can RFC822 headers contain the PIPE | symbol? -- ___ Python tracker <http://bugs.python.org/issue1598> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1598] unexpected response in imaplib
Roy Hyunjin Han added the comment: Hi Lita, I no longer have access to a Domino server. I'm not sure whether there are enough users trying to access Domino with imaplib for this to warrant investigation. RHH -- ___ Python tracker <http://bugs.python.org/issue1598> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1598] unexpected response in imaplib
Roy Hyunjin Han added the comment: Yes, I think closing this issue is reasonable. If the error reappears, we can just reopen it. -- ___ Python tracker <http://bugs.python.org/issue1598> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue24070] Exceptions and arguments disappear when using argparse inside with statement
New submission from Roy Hyunjin Han:
Exceptions and arguments disappear when using argparse inside a "with"
statement. The behavior was confusing and frustrating because I could not
pinpoint why certain arguments were missing or unrecognized.
Unhandled exceptions inside the with statement typically trigger a traceback,
unless __exit__ returns True, in which the exception is "swallowed"
(https://www.python.org/dev/peps/pep-0343/).
However, the NameError exception and tile_indices argument disappear because of
a premature sys.exit
(https://hg.python.org/cpython/file/default/Lib/argparse.py#l2385).
```
"""
$ python exception-in-with.py
EXPECTED
Traceback (most recent call last):
File "exception-in-with.py", line 51, in
abc # !!!
NameError: name 'abc' is not defined
ACTUAL
usage: exception-in-with.py [-h] --image_path PATH
exception-in-with.py: error: argument --image_path is required
$ python exception-in-with.py --image_path x
EXPECTED == ACTUAL
Traceback (most recent call last):
File "exception-in-with.py", line 51, in
abc # !!!
NameError: name 'abc' is not defined
$ python exception-in-with.py --image_path x --tile_indices 1
EXPECTED
Traceback (most recent call last):
File "exception-in-with.py", line 51, in
abc # !!!
NameError: name 'abc' is not defined
ACTUAL
usage: exception-in-with.py [-h] --image_path PATH
exception-in-with.py: error: unrecognized arguments: --tile_indices 1
"""
from argparse import ArgumentParser
class Starter(object):
def __init__(self):
self.argument_parser = ArgumentParser()
def __enter__(self):
return self
def __exit__(self, exception_type, exception_value, exception_traceback):
self.argument_parser.parse_args()
def add_argument(self, *args, **kw):
self.argument_parser.add_argument(*args, **kw)
with Starter() as starter:
starter.add_argument('--image_path', metavar='PATH', required=True)
abc # !!!
starter.add_argument('--tile_indices', metavar='INTEGER')
```
--
components: Library (Lib)
files: argparse-with-exception.py
messages: 242192
nosy: invisibleroads
priority: normal
severity: normal
status: open
title: Exceptions and arguments disappear when using argparse inside with
statement
type: behavior
versions: Python 2.7, Python 3.3
Added file: http://bugs.python.org/file39227/argparse-with-exception.py
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[issue24070] Exceptions and arguments disappear when using argparse inside with statement
Roy Hyunjin Han added the comment: The behavior may not be surprising from a technical perspective, but it is unintuitive. I think exceptions inside a with statement should trigger a traceback, unless you are saying that it is the responsibility of the author to catch and raise the exception inside __exit__, which feels to me like a workaround that is specific to parse_args. -- ___ Python tracker <http://bugs.python.org/issue24070> ___ ___ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
