apt-get -y  update && apt-get install -y  python python-pip && pip install rethinkdb

I am getting the following error
root@bd07b97dd7c9:/data# rethinkdb dump -c 127.0.0.1:28015  --password-file /data/pw
Traceback (most recent call last):
  File "/usr/local/bin/rethinkdb-dump", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.4/dist-packages/rethinkdb/_dump.py", line 143, in main
    options = parse_options(argv or sys.argv[2:], prog=prog)
  File "/usr/local/lib/python3.4/dist-packages/rethinkdb/_dump.py", line 94, in parse_options
    options, args = parser.parse_args(argv)
  File "/usr/local/lib/python3.4/dist-packages/rethinkdb/utils_common.py", line 359, in parse_args
    options, args = super(CommonOptionsParser, self).parse_args(*args, **kwargs)
  File "/usr/lib/python3.4/optparse.py", line 1386, in parse_args
    stop = self._process_args(largs, rargs, values)
  File "/usr/lib/python3.4/optparse.py", line 1426, in _process_args
    self._process_long_opt(rargs, values)
  File "/usr/lib/python3.4/optparse.py", line 1500, in _process_long_opt
    option.process(opt, value, values, self)
  File "/usr/lib/python3.4/optparse.py", line 778, in process
    value = self.convert_value(opt, value)
  File "/usr/lib/python3.4/optparse.py", line 770, in convert_value
    return self.check_value(opt, value)
  File "/usr/lib/python3.4/optparse.py", line 765, in check_value
    return checker(self, opt, value)
TypeError: file_contents() takes 2 positional arguments but 3 were given