draw_cube matrix model

import pygame
from OpenGL.GL import *
from OpenGL.GLU import *
from pygame.locals import *

vertices = (
    (1, 1, 1),
    (1, -1, 1),
    (-1, -1, 1),
    (-1, 1, 1),
    (1, 1, -1),
    (1, -1, -1),
    (-1, -1, -1),
    (-1, 1, -1)
    )

edges = (
    (0, 1),
    (2, 3),
    (4, 5),
    (6, 7),
    (0, 1),
    (5, 4),
    (3, 2),
    (6, 7),
    (0, 3),
    (7, 4),
    (1, 2),
    (6, 5)
    )


def draw_object():
    glPushMatrix()
    glColor3f(0, 1, 0)
    glBegin(GL_QUADS)
    x = 0
    for edge in edges:
        x = x + 1
        for vertex in edge:
            glVertex3iv(vertices[vertex])
    glEnd()
    glPopMatrix()




def main():
    pygame.init()
    display = (800,600)
    pygame.display.set_caption("05 Lab 1")
    pygame.display.set_mode(display, DOUBLEBUF|OPENGL|RESIZABLE)

    glEnable(GL_DEPTH_TEST)
    gluPerspective(40, (display[0]/display[1]), 1, 150)
    glTranslatef(0.0, 0.0, -10)
    glRotatef(0, 1, 0, 0)


    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                quit()

        if event.type==pygame.KEYDOWN:
            if event.key==pygame.K_UP:
                glTranslatef(0, 0, 0.5)
            if event.key==pygame.K_DOWN:
                glTranslatef(0,0, -0.5)

        keys=pygame.key.get_pressed()
        if keys[K_w]:
            glTranslatef(0, 0.5, 0)
        if keys[K_s]:
            glTranslatef(0, -0.5, 0)
        if keys[K_a]:
            glTranslatef(-0.5, 0, 0)
        if keys[K_d]:
            glTranslatef(0.5, 0, 0)

        glRotatef(1, 1, 2, 1)
        glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT)
        draw_object()
        pygame.display.flip()
        pygame.time.wait(10)


main()