pygame make color transparent code example

Example 1: pygame draw transparent rectangle

s = pygame.Surface((1000,750))  # the size of your rect
s.set_alpha(128)                # alpha level
s.fill((255,255,255))           # this fills the entire surface
windowSurface.blit(s, (0,0))    # (0,0) are the top-left coordinates

Example 2: how to set background color of an image to transparent in pygame

image = pygame.image.load("Your file location")
image.set_colorkey((0, 0, 0))  # If your bg color is black for the image