import pygame,sys 

class Player(pygame.sprite.Sprite):
    def _init_(self, pos_x, pos_y):
        super()._init_()
        self.image = pygame.Surface([20,20])
        self.image.fill((255,255,255))
        self.rect = self.image.get_rect()
        self.rect.topleft = [pos_x,pos_y]


# general setup 
pygame.init()
clock = pygame.time.Clock()

#game screen 
screen_width = 400 
screen_height = 400 
screen = pygame.display.set_mode((screen_width,screen_height))
pygame.display.set_caption("Sprite Animation")

#creating the sprites and groups 
moving_sprites = pygame.sprite.Group()