Progressively filling a container with rain

fillbeakers.py

def render(self, screen):
    screen.blit(self.image, (self.rect.x, self.rect.y))
    if (self.drops > 0):
      x = self.rect.x + 2

      rainColor = ()
      if (self.full):
        level = 1
        rainColor = (255,0,0)
      else:
        level = ( float(self.drops) / float(self.capacity) )
        # Normalize if full
        # TODO: Can this even happen?
        if (level > 1): level = 1
        rainColor = (67,173,255)

      y = screen.get_height() - level * self.image.get_height()
      # Normalize if full
      if (y >= self.rect.y): y += 5

      w = self.image.get_width() - 5

      color = ()
      pygame.draw.rect(screen, rainColor, Rect(x, y, w, y))