OpenGL render view without a visible window in python

I need to render some scene. I managed to do it in python using pyopengl and pygame. The problem is that it creates a window for a short period of time.

I want to render the same image and save it, without creating a visible window (Or possibly without creating a window at all, and even without pygame).

import cv2
import numpy as np
import pygame
from pygame.locals import *
from OpenGL.GL import *
from OpenGL.GLU import *

def main():
    DISPLAY_WIDTH = 900
    DISPLAY_HEIGHT = 900

    pygame.init()
    pygame.display.set_mode((DISPLAY_WIDTH, DISPLAY_HEIGHT), DOUBLEBUF | OPENGL)
    gluPerspective(90, (DISPLAY_WIDTH / DISPLAY_HEIGHT), 0.01, 12)

    glEnable(GL_TEXTURE_2D)
    glEnable(GL_DEPTH_TEST)
    glDepthFunc(GL_LEQUAL)

    glRotatef(-90, 1, 0, 0) # Straight rotation
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
    glRotatef(285, 0, 0, 1) # Rotate yaw
    glTranslatef(-5, -3, -2) # Move to position

    # Draw rectangle
    glBegin(GL_QUADS)
    glColor3f(1, 0, 0)
    glVertex3f(2, 2, 0)
    glVertex3f(2, 2, 2)
    glVertex3f(2, 6, 2)
    glVertex3f(2, 6, 0)
    glEnd()

    image_buffer = glReadPixels(0, 0, DISPLAY_WIDTH, DISPLAY_HEIGHT, OpenGL.GL.GL_RGB, OpenGL.GL.GL_UNSIGNED_BYTE)
    image = np.frombuffer(image_buffer, dtype=np.uint8).reshape(DISPLAY_WIDTH, DISPLAY_HEIGHT, 3)

    cv2.imwrite(r"C:\temp\image.png", image)

    pygame.quit()


if __name__ == "__main__":
    main()

from OpenGL render view without a visible window in python