import pygame as pg

from OpenGL.GL import *

class App():

    def __init__(self):

        # init python 

        pg.init()

        self.clock = pg.time.Clock()

        # init opengl

        glClearColor(0.1, 0.2, 0.2, 1)

        self.mainLoop()

    def mainLoop(self):

        running = True

        while running:

            # check events

            for event in pg.event.get():

                if event.type == pg.QUIT:

                    running = False

            # refresh

            glClear(GL_COLOR_BUFFER_BIT)

            pg.display

            # timing

            self.clock.tick(60)

        self.quit()

    def quit(self):

        pg.quit()

if __name__ == "__main__":

    myApp = App()

import pygame as pg

from OpenGL.GL import *

class App():

    def __init__(self):

        pg.init()

        pg.display.set_mode((800, 600), pg.OPENGL) # create OpenGL display

        self.clock = pg.time.Clock()

        glClearColor(0.1, 0.2, 0.2, 1)

        self.mainLoop()

    def mainLoop(self):

        running = True

        while running:

            for event in pg.event.get():

                if event.type == pg.QUIT:

                    running = False

            # draw 

            glClear(GL_COLOR_BUFFER_BIT)

            # [...]

            # update display

            pg.display.flip()

            self.clock.tick(60)

        self.quit()

    def quit(self):

        pg.quit()

if __name__ == "__main__":

    myApp = App()