Memory errors with imaplib

[Martey]

Hi everyone,

I am trying to use imaplib to download messages, but I keep getting
memory errors when I try to download a large message (i.e. one with
attachments). Here is my test code (similar to the example in the
imaplib documentation):

import getpass, imaplib

M = imaplib.IMAP4_SSL("imap.gmail.com")
M.login("martey at gmail.com", getpass.getpass())
M.select("[Gmail]/All Mail")
typ, data = M.search(None, 'ALL')
for num in data[0].split():
    typ, data = M.fetch(num, '(RFC822)')
    print 'Message %s\n%s\n' % (num, data[0][1])
M.close()
M.logout()


And here is the error message:

Python(4521) malloc: *** mmap(size=6389760) failed (error code=12)
*** error: can't allocate region
*** set a breakpoint in malloc_error_break to debug
Traceback (most recent call last):
  File "imaptest.py", line 8, in <module>
    typ, data = M.fetch(num, '(RFC822)')
  File "/Library/Frameworks/Python.framework/Versions/2.5/lib/
python2.5/imaplib.py", line 437, in fetch
    typ, dat = self._simple_command(name, message_set, message_parts)
  File "/Library/Frameworks/Python.framework/Versions/2.5/lib/
python2.5/imaplib.py", line 1055, in _simple_command
    return self._command_complete(name, self._command(name, *args))
  File "/Library/Frameworks/Python.framework/Versions/2.5/lib/
python2.5/imaplib.py", line 885, in _command_complete
    typ, data = self._get_tagged_response(tag)
  File "/Library/Frameworks/Python.framework/Versions/2.5/lib/
python2.5/imaplib.py", line 986, in _get_tagged_response
    self._get_response()
  File "/Library/Frameworks/Python.framework/Versions/2.5/lib/
python2.5/imaplib.py", line 948, in _get_response
    data = self.read(size)
  File "/Library/Frameworks/Python.framework/Versions/2.5/lib/
python2.5/imaplib.py", line 1150, in read
    data = self.sslobj.read(size-read)
MemoryError

I am using Mac OS X 10.5 and Python 2.5.1 (downloaded from
python.org). I think it is possible that it is <http://bugs.python.org/
issue1092502>, but the workarounds suggested there do not seem to work
for me. Is this an actual Python bug, or am I doing something wrong?