how to get a mouse press not hold in pygame

1class Button(object):
2    def __init__(self,x,y,width,height,color):
3        self.rect = pygame.Rect(x,y,width,height)
4        self.image=pygame.draw.rect(screen, color,(self.rect),)
5        self.x=x
6        self.y=y
7        self.width=width
8        self.height=height
9
10    def check(self):
11        return self.rect.collidepoint(pygame.mouse.get_pos())