PyGame boilerplate code

main.py

import pygame as pg

class Program:
    def __init__(self, res=None, fps=60, title=None):
        pg.init()
        self.res = self.width, self.height = res if not res is None else [800, 600] # If resolution is not set then 800x600
        self.center = self.center_width, self.center_height = (res[0] // 2, res[1] // 2) if not res is None else [400, 300] # Same, but divided by 2
        self.fps = fps
        self.screen = pg.display.set_mode(self.res)
        self.clock = pg.time.Clock()
        self.title = title

    def draw(self): # Draw things here
        self.screen.fill(pg.color.Color("darkslategray"))

    def update(self): # Calculate things here
        pass

    def run(self):
        while True:
            self.update()
            self.draw()
            [exit() for ev in pg.event.get() if ev.type == pg.QUIT]
            pg.display.set_caption(str(self.clock.get_fps()) if self.title is None else self.title) # Set caption to FPS if caption is not set
            pg.display.flip()
            self.clock.tick(self.fps)

if __name__ == "__main__":
    pgm = Program()
    pgm.run()