implementing pyshark

[Michael S.]

Hi everyone. while trying to implement pyshark, i am getting this error:
        import pyshark
       capture = pyshark.LiveCapture(interface='wlan0')
       capture.sniff(timeout=50)
       capture
i have tried also to run it through interpreter yet, i got this error:
import pyshark
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
<ipython-input-1-e46ddf42872e> in <module>()
----> 1 import pyshark

/usr/local/lib/python2.7/dist-packages/pyshark-0.3.4-py2.7.egg/pyshark/__init__.py 
in <module>()
----> 1 from pyshark.capture.live_capture import LiveCapture
       2 from pyshark.capture.file_capture import FileCapture
       3 from pyshark.capture.remote_capture import RemoteCapture
       4 from pyshark.capture.inmem_capture import InMemCapture

/usr/local/lib/python2.7/dist-packages/pyshark-0.3.4-py2.7.egg/pyshark/capture/live_capture.py 
in <module>()
----> 1 from pyshark.capture.capture import Capture
       2 from pyshark.tshark.tshark import get_tshark_interfaces
       3
       4
       5 class LiveCapture(Capture):

/usr/local/lib/python2.7/dist-packages/pyshark-0.3.4-py2.7.egg/pyshark/capture/capture.py 
in <module>()
       1 from __future__ import unicode_literals
       2 import os
----> 3 import logbook
       4 import sys
       5

/usr/local/lib/python2.7/dist-packages/logbook/__init__.py in <module>()
      12
      13
---> 14 from logbook.base import LogRecord, Logger, LoggerGroup, 
NestedSetup, \
      15      Processor, Flags, get_level_name, lookup_level, 
dispatch_record, \
      16      CRITICAL, ERROR, WARNING, NOTICE, INFO, DEBUG, NOTSET, \

/usr/local/lib/python2.7/dist-packages/logbook/base.py in <module>()
      16 from datetime import datetime
      17 from logbook import helpers
---> 18 from logbook.concurrency import thread_get_name, 
thread_get_ident, greenlet_get_ident
      19
      20 from logbook.helpers import to_safe_json, parse_iso8601, 
cached_property, \

/usr/local/lib/python2.7/dist-packages/logbook/concurrency.py in <module>()
      29
      30 if has_gevent:
---> 31     from gevent._threading import (Lock as ThreadLock,
      32                                    RLock as ThreadRLock,
      33                                    get_ident as thread_get_ident,

ImportError: No module named _threading

i tried importing threading first and importing pyshark, but the answer 
was the same.
any suggestions?