How to create pygame rects one by one in a for loop?

Question

I'm trying to create rects one by one. Each time the previous rect is deleted. The problem is that only the last one is created. If I comment out the line if index != 0 , such that all rects are created in once, the program works. But I need to create the rects one by one.

def draw_path(self, path):
    for index, i in enumerate(path):
        self.create_rect(colors['dark_red'], colors['red'], i[0] * TILE_SIZE, i[1] * TILE_SIZE, TILE_SIZE,TILE_SIZE)
        if index != 0:
            self.create_rect(colors['black'], colors['dark_gray'], path[index-1][0] * TILE_SIZE, path[index-1][1] * TILE_SIZE, TILE_SIZE, TILE_SIZE)
        self.player.position = (i[0], i[1])

I've tried to use the built in pygame functions delay , wait and timer , but it doesn't seem to fix the problem. Could anyone explain me, preferably with an example, how I can fix it?

Answer 1

you need to call the function pygame.screen.update() after each rect object is created and deleted if you want it to be displayed