Imaplib error? EOF error?

Hi, when I run following code on either my linux ubuntu or my raspberry pi I get the following error?

On ubuntu zesty 17.04

from pattern.web import Mail, GMAIL, SUBJECT

gmail = Mail(username='username', password='password', service=GMAIL, port=993, secure=False)
print gmail.folders.keys()

['drafts', 'spam', 'personal', 'work', 'inbox', 'mail', 'starred', 'trash']

python test.py
Traceback (most recent call last):
  File "test.py", line 7, in <module>
    gmail = Mail(username='username', password='password', service=GMAIL, port=993, secure=False)
  File "/home/myname/anaconda2/lib/python2.7/site-packages/pattern/web/imap/__init__.py", line 115, in __init__
    self.login(username, password)
  File "/home/myname/anaconda2/lib/python2.7/site-packages/pattern/web/imap/__init__.py", line 133, in login
    self._imap4 = (self._secure and IMAP4_SSL or IMAP4)(self._host, self._port)
  File "/home/myname/anaconda2/lib/python2.7/imaplib.py", line 194, in __init__
    self.welcome = self._get_response()
  File "/home/myname/anaconda2/lib/python2.7/imaplib.py", line 931, in _get_response
    resp = self._get_line()
  File "/home/myname/anaconda2/lib/python2.7/imaplib.py", line 1031, in _get_line
    raise self.abort('socket error: EOF')
imaplib.abort: socket error: EOF

On RPi

same input

python test.py
Traceback (most recent call last):
  File "test.py", line 7, in <module>
    gmail = Mail(username='username', password='password', service=GMAIL, port=993, secure=False)
  File "/usr/local/lib/python2.7/dist-packages/pattern/web/imap/__init__.py", line 115, in __init__
    self.login(username, password)
  File "/usr/local/lib/python2.7/dist-packages/pattern/web/imap/__init__.py", line 133, in login
    self._imap4 = (self._secure and IMAP4_SSL or IMAP4)(self._host, self._port)
  File "/usr/lib/python2.7/imaplib.py", line 193, in __init__
    self.welcome = self._get_response()
  File "/usr/lib/python2.7/imaplib.py", line 928, in _get_response
    resp = self._get_line()
  File "/usr/lib/python2.7/imaplib.py", line 1028, in _get_line
    raise self.abort('socket error: EOF')
imaplib.abort: socket error: EOF

Reproduce the failure with the Python 2 examples on Ubuntu or the Raspberry Pi, then inspect pattern/web/imap/init.py at the Mail constructor and login call alongside Python's imaplib connection handling. Determine the relevant configuration or compatibility problem and verify the result by rerunning test.py without the socket EOF error.