Re: [PyOpenGL-Users] TypeError: 'NoneType' object is not callable

[Mike C. F. <mcf...@vr...>]

On 12-05-23 03:34 PM, Wilkes, Edward D (Ed) wrote:
>
> Hello, I am working on a special build of Python 2.7.3 to run the 
> pizza.py package from Sandia National Laboratories. I am working on a 
> DL585 machine with CentOS 5.2 operating system and Intel 11.1/059 
> compilers. The following packages are required to be installed in Python:
>
> tcl/8.5.11, tk/8.5.11, Togl/2.0, PIL/1.1.7, PyOpenGL/3.0.1, 
> pexpect/2.4, Pmw/1.3.2, NumPy/1.6.1, SciPy/0.10.1
>
> Each of the packages was built from sources and installed according to 
> the instruction on the pizza.py web page and import tests were done to 
> verify the packages can be imported. This Python build was placed in 
> the default path and several pizza.py examples were tried. Some of 
> these use the “gl” tool which opens and works with OpenGL objects. 
> These examples, however, fail as follows:
>
> <type ‘exceptions.TypeError’> ‘NoneType’ object is not callable 
> <traceback object at 0xdedaab8>
>
> TypeError’> with value: ‘NoneTye object is not callable
>
> error on line 31 of file ./test_cdata.py g = gl(c)
>
> error on line 182 of file …/pizza-21May12/src/gl.py glutInit()
>
> error on line 323 of file 
> …/lib/python2.7/site-packages/OpenGL/GLUT/special.py _/base/_glutInit( 
> ctypes.byref(count), holder )
>
> The file special.py comes from PyOpenGL 3.0.1 which installs it at 
> this location in Python. It contains the definition for glutInit() as 
> well as _/base/_glutInit() and __glutInitWithExit which appears to be 
> defined as None except for nt platforms. The glutInit() definition 
> provides default arguments when it is called with none.
>
> So I am unclear what is causing the NoneType exception to be raised 
> and what can be done to resolve the problem. Any help would be 
> appreciated.
>
Can you confirm that you have your platform's GLUT/FreeGLUT package 
installed? PyOpenGL is looking for the glutInit entry point in the GLUT 
DLL and finding nothing.

HTH,
Mike

-- 
________________________________________________
   Mike C. Fletcher
   Designer, VR Plumber, Coder
   http://www.vrplumber.com
   http://blog.vrplumber.com