On Sat, Jun 26, 2021 at 12:28 AM Chris Green <c...@isbd.net> wrote: > > Greg Ewing <greg.ew...@canterbury.ac.nz> wrote: > > On 25/06/21 7:06 am, Chris Green wrote: > > > In python 2 one can do:- > > > > > > for msg in maildir: > > > print msg # or whatever you want to do with the message > > > > > > > > > However in python 3 this produces "TypeError: string argument > > > expected, got 'bytes'". > > > > > > How should one iterate over a maildir in python3? > > > > You're already iterating over it just fine. Your problem is > > actually how to *print* a mail message. > > > > The answer to this will depend on what your purpose is. If > > you just want a rough-and-ready idea of what the message > > contains, you could do this: > > > > print(repr(msg)) > > > > However, that won't work very well if the message doesn't > > consist of mostly text in an ASCII-compatible encoding. > > > > If you want something better, Python comes with some standard > > library code for dealing with mail messages. Check out the > > 'email' module. > > > The error comes from the line "for msg in maildir:", not the print. > > Here's the full program where I'm encountering the error (yes, I > should have posted this first time around) :- > > #!/usr/bin/python3 > > import mailbox > import sys > import email > > > # open the existing maildir and the target mbox file > maildir = mailbox.Maildir(sys.argv [-2], email.message_from_file) > mbox = mailbox.mbox(sys.argv[-1]) > > # iterate over messages in the maildir and add to the mbox > for msg in maildir: > mbox.add(msg) >
Maildir says that the factory has to take a binary file object. It looks like email.message_from_file is expecting a text file object, but there's a very similar function message_from_binary_file that might be what you want. Haven't tested it, but worth a try. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
