python - pycharm cannot find reference 'layer' in '__init__.py' for cocos2d -

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i starting out learn cocos2d using python.

when write in pycharm :

import cocos  class helloworld(cocos.layer.layer): def __init__(self):     super(helloworld, self).__init__()     label = cocos.text.label('hello, world!',                              font_name = 'times new roman',                              font_size = 32,                              anchor_x='center', anchor_y='center')     label.position = 320, 240     self.add(label) cocos.director.director.init() hello_layer = helloworld() main_scene = cocos.scene.scene(hello_layer) cocos.director.director.run(main_scene)

pycharm shows error cannot find reference 'layer' in '__init__.py' when run it, code works. code works when run inside pycharm (not via terminal), although don't find surprising, thought maybe requires mentioning. doesn't gives auto-suggestions and/or auto-completes related cocos2d.

any idea on how fix ?

i using python 3.4.


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