Drawing objects with Python and OpenGL.

drawing.py

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

def myInit():
    glClearColor(1.0, 1.0, 0.0, 1.0) 
    glColor3f(0.2, 0.5, 0.4)
    glPointSize(10.0)
    gluOrtho2D(0, 500, 0, 500)

def display():
    glClear(GL_COLOR_BUFFER_BIT)

    glBegin(GL_POINTS)
    glVertex2f(100, 100)
    glVertex2f(300, 200)
    glEnd()

    glBegin( GL_QUADS ) 
    glVertex2f( 100.0, 100.0 ) 
    glVertex2f( 300.0, 100.0 ) 
    glVertex2f( 300.0, 200.0 ) 
    glVertex2f( 100.0, 200.0 ) 
    glEnd()  

    glBegin(  GL_TRIANGLE_STRIP ) 
    glVertex2f( 100.0, 210.0 ) 
    glVertex2f( 300.0, 210.0 ) 
    glVertex2f( 300.0, 310.0 ) 
    glEnd() 

    glFlush()


glutInit()
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB)   
glutInitWindowSize(500, 500)  
glutInitWindowPosition(100, 100)  
glutCreateWindow("My OpenGL Code")
myInit()
glutDisplayFunc(display) 
glutMainLoop()