Setting up python-zmq (15.2.0-0ubuntu2) ...
  File "/usr/lib/python2.7/dist-packages/zmq/asyncio.py", line 79
    "{!r}".format(fileobj)) from None
                               ^
SyntaxError: invalid syntax

  File "/usr/lib/python2.7/dist-packages/zmq/auth/asyncio.py", line 28
    events = yield from self.__poller.poll()
                      ^
SyntaxError: invalid syntax

dpkg: error processing package python-zmq (--configure):
 subprocess installed post-installation script returned error exit status 101
Processing triggers for libc-bin (2.21-0ubuntu6) ...
Errors were encountered while processing:
 python-zmq
E: Sub-process /usr/bin/dpkg returned an error code (1)