Limit issue?

Let say your inbox has 90 emails. And your code is

for msg in mailbox.fetch(limit=100):
    print(msg.uid)

It seems to stuck in the loop.

Here is the trace when i stop the debug:

 line 99, in fetch
    fetch_result = self.box.fetch(message_id, "(BODY[] UID FLAGS)" if mark_seen else "(BODY.PEEK[] UID FLAGS)")
  File "/usr/lib/python3.6/imaplib.py", line 534, in fetch
    typ, dat = self._simple_command(name, message_set, message_parts)
  File "/usr/lib/python3.6/imaplib.py", line 1196, in _simple_command
    return self._command_complete(name, self._command(name, *args))
  File "/usr/lib/python3.6/imaplib.py", line 1019, in _command_complete
    typ, data = self._get_tagged_response(tag)
  File "/usr/lib/python3.6/imaplib.py", line 1139, in _get_tagged_response
    self._get_response()
  File "/usr/lib/python3.6/imaplib.py", line 1094, in _get_response
    data = self.read(size)
  File "/usr/lib/python3.6/imaplib.py", line 305, in read
    return self.file.read(size)
KeyboardInterrupt

[ikvk]

would it mark the email already as seen to seen again?

If you mean unnecessary work, I think it depends on email server

[oaigudmundsson]

I am debugging. Will post later for more result.

Cheers