Python 3.6.0 (default, Jan  7 2017, 17:02:39) 
[GCC 5.4.0 20160609] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import social_core.backends.google
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/paul/.venvs/catstats/lib/python3.6/site-packages/social_core/backends/google.py", line 6, in <module>
    from .open_id import OpenIdAuth
  File "/home/paul/.venvs/catstats/lib/python3.6/site-packages/social_core/backends/open_id.py", line 6, in <module>
    from openid.consumer.consumer import Consumer, SUCCESS, CANCEL, FAILURE
  File "/home/paul/.venvs/catstats/lib/python3.6/site-packages/openid/consumer/consumer.py", line 196, in <module>
    from openid.consumer.discover import discover, OpenIDServiceEndpoint, \
  File "/home/paul/.venvs/catstats/lib/python3.6/site-packages/openid/consumer/discover.py", line 22, in <module>
    from openid.yadis.etxrd import nsTag, XRDSError, XRD_NS_2_0
  File "/home/paul/.venvs/catstats/lib/python3.6/site-packages/openid/yadis/etxrd.py", line 31, in <module>
    SafeElementTree = importSafeElementTree()
  File "/home/paul/.venvs/catstats/lib/python3.6/site-packages/openid/oidutil.py", line 83, in importSafeElementTree
    return importElementTree(module_names)
  File "/home/paul/.venvs/catstats/lib/python3.6/site-packages/openid/oidutil.py", line 106, in importElementTree
    ElementTree = __import__(mod_name, None, None, ['unused'])
  File "/home/paul/.venvs/catstats/lib/python3.6/site-packages/defusedxml/cElementTree.py", line 16, in <module>
    from .ElementTree import DefusedXMLParser, _IterParseIterator
  File "/home/paul/.venvs/catstats/lib/python3.6/site-packages/defusedxml/ElementTree.py", line 62, in <module>
    _XMLParser, _iterparse, _IterParseIterator, ParseError = _get_py3_cls()
  File "/home/paul/.venvs/catstats/lib/python3.6/site-packages/defusedxml/ElementTree.py", line 56, in _get_py3_cls
    _IterParseIterator = pure_pymod._IterParseIterator
AttributeError: module 'xml.etree.ElementTree' has no attribute '_IterParseIterator'
>>>