import OpenGL
from OpenGL.GL import *
from OpenGL.GL import shaders
from OpenGL.arrays import vbo

import math
import pygame
from pygame.locals import *

VERTEX_SHADER = shaders.compileShader("""
#version 120
 void main() {
    gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
 }
""", GL_VERTEX_SHADER)

FRAGMENT_SHADER = shaders.compileShader("""
#version 120
void main() {
    gl_FragColor = vec4( 0, 1, 0, 1 );
}
""", GL_FRAGMENT_SHADER)

self.shader = shaders.compileProgram(VERTEX_SHADER,FRAGMENT_SHADER)

Traceback (most recent call last):
  File "PyOpenGl shader test from scratch.py", line 24, in <module>
    self.shader = shaders.compileProgram(VERTEX_SHADER,FRAGMENT_SHADER)
  File "/home/[my name]/.local/lib/python2.7/site-packages/OpenGL    /GL/shaders.py", line 196, in compileProgram
    program.check_validate()
  File "/home/[my name]/.local/lib/python2.7/site-packages/OpenGL/GL/shaders.py", line 108, in check_validate
    glGetProgramInfoLog( self ),
RuntimeError: Validation failure (0):