Problem about running 'pole_balancing.py'

[winycg]

When I run the pole_balancing.py,the problem will be happen:
ERROR Information:
Traceback (most recent call last):
File "D:/pythonproject/pole_balancing.py", line 52, in
env.render()
File "D:\Anaconda\lib\site-packages\gym\envs\classic_control\cartpole.py", line 107, in render
self.viewer = rendering.Viewer(screen_width, screen_height)
File "D:\Anaconda\lib\site-packages\gym\envs\classic_control\rendering.py", line 51, in init
self.window = pyglet.window.Window(width=width, height=height, display=display)
File "D:\Anaconda\lib\site-packages\pyglet\window_init_.py", line 504, in init
screen = display.get_default_screen()
File "D:\Anaconda\lib\site-packages\pyglet\canvas\base.py", line 73, in get_default_screen
return self.get_screens()[0]
File "D:\Anaconda\lib\site-packages\pyglet\canvas\base.py", line 65, in get_screens
raise NotImplementedError('abstract')
NotImplementedError: abstract
Exception ignored in: <bound method Viewer.del of <gym.envs.classic_control.rendering.Viewer object at 0x000001606D31D668>>
Traceback (most recent call last):
File "D:\Anaconda\lib\site-packages\gym\envs\classic_control\rendering.py", line 143, in del
self.close()
File "D:\Anaconda\lib\site-packages\gym\envs\classic_control\rendering.py", line 62, in close
self.window.close()
AttributeError: 'Viewer' object has no attribute 'window'

Process finished with exit code 1

But when I note ‘import MultiNEAT as NEAT’ by using '#'， the ‘env.render()’ can be normal used.I don't know why.

[anton-matosov]

You need pythonw on windows or python.app on mac to run python scripts that need access to window sybsystem