[Email-SIG] fixing the current email module
barry at python.org
Thu Oct 8 15:14:05 CEST 2009
On Oct 8, 2009, at 5:18 AM, Oleg Broytman wrote:
> Are you going to parse any garbage and create a Message (probably an
> empty Message) with one defect "cannot parse it at all"?
Yes, although the most pathological stream of bytes will probably
produce a message with no headers and an undecodeable body of
gibberish bytes, with a .defects list possible one or two items long.
> What I disagree with is that if a parser cannot parse input
> garbage at
> all it must raise an exception. And if a parser can raise an
> exception any
> calling program must be prepared to catch such exceptions.
Python 2.6.3 (r263:75183, Oct 4 2009, 19:57:34)
[GCC 4.4.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from email import message_from_string
>>> with open('/dev/urandom') as wire:
... data = wire.read(1024)
>>> msg = message_from_string(data)
>>> # number of headers
This actually makes perfect sense. A message with no headers and a
mass of 1024 bytes in its payload is RFC valid!
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