python-3.x – 在OpenAI的env.render()之后出错

import gym

env = gym.make("CartPole-v0")

env.reset()

env.render()

运行前3行没有问题,但是当我运行第4行时,我得到错误：

Traceback (most recent call last):

  File "<ipython-input-3-a692a1a1ffe7>",line 1,in <module>
    env.render()

  File "/home/mikedoho/gym/gym/core.py",line 150,in render
    return self._render(mode=mode,close=close)

  File "/home/mikedoho/gym/gym/core.py",line 286,in _render
    return self.env.render(mode,close)

  File "/home/mikedoho/gym/gym/core.py",close=close)

  File "/home/mikedoho/gym/gym/envs/classic_control/cartpole.py",line 116,in _render
    self.viewer = rendering.Viewer(screen_width,screen_height)

  File "/home/mikedoho/gym/gym/envs/classic_control/rendering.py",line 51,in __init__
    self.window = pyglet.window.Window(width=width,height=height,display=display)

  File "/home/mikedoho/anaconda3/lib/python3.6/site-packages/pyglet/window/__init__.py",line 504,in __init__
    screen = display.get_default_screen()

  File "/home/mikedoho/anaconda3/lib/python3.6/site-packages/pyglet/canvas/base.py",line 73,in get_default_screen
    return self.get_screens()[0]

  File "/home/mikedoho/anaconda3/lib/python3.6/site-packages/pyglet/canvas/base.py",line 65,in get_screens
    raise NotImplementedError('abstract')

NotImplementedError: abstract

我希望在一个杆子上安装一个推车,以便在新窗口中显示.

此错误来自Spyder中的代码.我使用的是ubuntu 16.04; python 3.6.3; IPython 6.1.0.我没有运气使用jupyter笔记本.

我再次道歉.今天刚刚下载的ubuntu我很新.