Question

I am trying to learn the basics of game programming and I have installed pygame and pyopengl for that.

MyCode:

import sys
import OpenGL

from OpenGL.GL import *     
from OpenGL.GLU import *    
from OpenGL.GLUT import *

def draw():
      glClear(GL_COLOR_BUFFER_BIT)
      glutWireTeapot(0.5)
      glFlush()

glutInit(sys.argv)
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB)
glutInitWindowSize(250, 250)
glutInitWindowPosition(100, 100)
glutCreateWindow("Python OGL Program")
glutDisplayFunc(draw)
glutMainLoop()

draw()

When I run the above code in my command prompt using

python test.py

I get the following error.

Traceback (most recent call last):
  File "test.py", line 13, in <module>
    glutInit(sys.argv)
  File "C:\Python27\lib\site-packages\pyopengl-3.0.2a5-py2.7.egg\OpenGL\GLUT\special.py", line 324, in glutInit
    _base_glutInit( ctypes.byref(count), holder )
TypeError: 'NoneType' object is not callable

I don’t understand why I am getting this error. Am I calling glutinit in a wrong way?

I am using Python 2.7.2.

Answer 1

The problem was with my PyOpenGL installation. Earlier I installed it using easy_install.

So, as @Ferdinand suggested that there seems to be something wrong with your pyopengl installation.

I did a clean install using python setup.py install and it worked.