Author Stephen.Evans
Recipients Stephen.Evans, barry, r.david.murray
Date 2016-03-11.23:23:42
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With the imaplib.Debug=3 (or greater) imaplib.noop() will crash if there are any untagged responses present.

The _dump_ur() function has not been converted to expect bytes in the lambda variable x[1]. An abbreviate example of the 'dict' parameter would be:

{'READ-WRITE': [b''], 'FETCH': [b'1 (FLAGS (\\Recent NonJunk))']}

This _dump_ur() function needs converting to Python 3.x, say, change the map/lambda line to:
  l = map(lambda x:'%s: %r' % (x[0], x[1]), l)

A sample crash inducing session produced by the attached file (using another email client to produce untagged responses for NOOP):

  20:01.23 imaplib version 2.58
  20:01.23 new IMAP4 connection, tag=b'LMHB'
Traceback (most recent call last):
  File "E:/temp/imap-idle/", line 18, in <module>
    connection.noop()  # Crashes here.
  File "C:\Python35\lib\", line 656, in noop
  File "C:\Python35\lib\", line 1210, in _dump_ur
    self._mesg('untagged responses dump:%s%s' % (t, t.join(l)))
  File "C:\Python35\lib\", line 1209, in <lambda>
    l = map(lambda x:'%s: "%s"' % (x[0], x[1][0] and '" "'.join(x[1]) or ''), l)
TypeError: sequence item 0: expected str instance, bytes found
Date User Action Args
2016-03-11 23:23:43Stephen.Evanssetrecipients: + Stephen.Evans, barry, r.david.murray
2016-03-11 23:23:43Stephen.Evanssetmessageid: <>
2016-03-11 23:23:43Stephen.Evanslinkissue26543 messages
2016-03-11 23:23:43Stephen.Evanscreate