我正在尝试使用PsychoPy中的操纵杆，我无法导入模块而不会出现以下错误：
File "joytest.py", line 1, in <module>
from psychopy.hardware import joystick
File "/usr/lib/pymodules/python2.7/psychopy/hardware/joystick/__init__.py", line 36, in <module>
import pyglet_input
File "/usr/lib/pymodules/python2.7/psychopy/hardware/joystick/pyglet_input/__init__.py", line 155, in <module>
from x11_xinput import get_devices as xinput_get_devices
File "/usr/lib/pymodules/python2.7/psychopy/hardware/joystick/pyglet_input/x11_xinput.py", line 11, in <module>
from pyglet.input.base import \
ImportError: No module named input.base
我使用的是Ubuntu 14.04，运行Python 2.7.6，PsychoPy 1.79.01和pyglet 1.1.4。任何帮助将不胜感激！