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


def draw():
    glClear(GL_COLOR_BUFFER_BIT)
    glTranslatef(0.5, 0, 0)
    glBegin(GL_TRIANGLES)
    glVertex2f(0.0, 0.0)
    glVertex2f(0.2, 0.0)
    glVertex2f(0.4, 0.4)
    glEnd()
    glutSwapBuffers()

def keyboard(key, x, y):
    if key == chr(27):
        sys.exit(0)

glutInit([])
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB)
glutInitWindowSize(400, 400)
glutInitWindowPosition(0,0)
glutCreateWindow(sys.argv[0])
glutDisplayFunc(draw)
glutKeyboardFunc(keyboard)
glutMainLoop()