"Hello world' throwing attribute error

[Michael Calvey]

Hello all,

I am brand new to cocos, and I am trying to find the best engine/ library for a top down game I am about to start working on. While going through the hello world exercise in the docs, I am receiving an AttributeError.

Here is the code:

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)

And the traceback:

Traceback (most recent call last):

  File "/Users/michaelcalvey/Documents/cocos.py", line 1, in <module>

    import cocos

  File "/Users/michaelcalvey/Documents/cocos.py", line 4, in <module>

    class HelloWorld(cocos.layer.Layer):

AttributeError: module 'cocos' has no attribute 'layer'

Thanks a lot for the help, sorry if it is an obvious problem but I have looked around and haven't found anything relevant.

I am really looking forward to getting this to work!

Michael

[Daniel Gillet]

Hello,

Glad you give cocos a try.

The solution to your problem is quite simple. You've named your file `cocos.py`. So when importing cocos, Python only imports your file itself. Rename it to something else, and you won't have this problem. :)

Cheers,

Dan.

[Philip McDermott]

I am using the same code and am getting this error: Traceback (most recent call last):

  File "C:/Users/Jeanne and Phil/AppData/Local/Programs/Python/Python35-32/helloworld.py", line 3, in <module>

    class HelloWorld(cocos.layer.Layer):

  File "C:/Users/Jeanne and Phil/AppData/Local/Programs/Python/Python35-32/helloworld.py", line 11, in HelloWorld

    anchor_x='center', anchor_y='center')

  File "C:\Users\Jeanne and Phil\AppData\Local\Programs\Python\Python35-32\lib\site-packages\cocos\text.py", line 65, in __init__

    super(TextElement, self).__init__()

  File "C:\Users\Jeanne and Phil\AppData\Local\Programs\Python\Python35-32\lib\site-packages\cocos\cocosnode.py", line 136, in __init__

    self.camera = Camera()

  File "C:\Users\Jeanne and Phil\AppData\Local\Programs\Python\Python35-32\lib\site-packages\cocos\camera.py", line 61, in __init__

    self.restore()

  File "C:\Users\Jeanne and Phil\AppData\Local\Programs\Python\Python35-32\lib\site-packages\cocos\camera.py", line 81, in restore

    width, height = director.get_window_size()

  File "C:\Users\Jeanne and Phil\AppData\Local\Programs\Python\Python35-32\lib\site-packages\cocos\director.py", line 554, in get_window_size

    return self._window_virtual_width, self._window_virtual_height

AttributeError: 'Director' object has no attribute '_window_virtual_width'

Any suggestions? My file name is helloworld.py 

[Claudio Canepa]

If your code looks like the one posted above, there is a problem with indentation.

The python interpreter sees

 - "import cocos" : no problem here

 - "class HelloWorld(cocos.layer.Layer):" : begins class definition, no problem here

 - "    def __init__(self):

         super( HelloWorld, self).__init__()

   " : begins method __init__, and the only instruction in that method is the super(...) call, because the next line dedents

 - "label = cocos.text.Label(...)" : a class member "label" is defined, and the code tries to assign a Label instance. But the label instantiation wants to know the window geometry to do the self centering; problem is, the window was not yet created, hence the AttributeError.

I fixed the indentation to what seemed the desired intent, and it runs as expected.

Attached (so as the formatting don't get lost) the fixed code 

[Nathan Allen]

I know this is super old, but for me it was caused by installing just "cocos" from pip, then i tried installing cocos2d and the two modules like merged into the same folder. so just delete the directory and install cocos2d with pip again.

On Thursday, February 4, 2016 at 8:21:15 PM UTC-5, Michael Calvey wrote: