AttributeError: attribute '__doc__' of 'instancemethod' objects is not writable

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Hi i'm e-puck2 user and i have a problem with running ros program with this robot

this is command to run ros with e-puck2

roslaunch epuck_driver epuck2_controller.launch epuck2_address:='B4:E6:2D:EB:9B:87'

and Rviz window is open but in terminal, the log in below is generate infinitely

[epuck2_robot_0-1] restarting process
process[epuck2_robot_0-1]: started with pid [7443]
Traceback (most recent call last):
  File "/home/netlab/catkin_ws/src/epuck_driver/scripts/epuck2_driver.py", line 7, in <module>
    from epuck.ePuck2 import ePuck2
  File "/home/netlab/catkin_ws/src/epuck_driver/src/epuck/ePuck2.py", line 55, in <module>
    import bluetooth  # Used for communications
  File "/usr/local/lib/python2.7/dist-packages/bluetooth/__init__.py", line 282, in <module>
    """
AttributeError: attribute '__doc__' of 'instancemethod' objects is not writable

i think pybluez has the problem but i don't know how to fix i hope someone can help me