pygame.sprite.spritecollideany

I've finally found out how to do collision detection for my new game Flappy Bird. 

How to do it (the full code is on the arcade games page)

​CODE FOR MAKING A GROUP OF CLASS  MEMBERS AND UPDATING THE GROUP

1. class Pipe (pygame.sprite.Sprite):
2.   def __init__(self, image,[...]):
3.     pygame.sprite.Sprite.__init__(self)
4.     self.image = image
5.     self.rect = self.image.get_rect()​
6.    self.x = 5
7.   self.y = 5
8.    [...]
9.  
10.  def update(self):
11.   screen.blit(self.image, (self.x,self.y)
12.  self.rect = Rect(self.x, self.y, 50,50)
13. ​
14. def main():
15.    pipe_image = image.load('pipe.png')
16.   pipeGroup = pygame.sprite.group()
17.   for x in range(3):
18.   pipeGroup.add(Flappy_class(flappy_image, [...]))
19. while True:
20.   pipeGroup.update()
21. ​  pygame.display.update()

KEY

line 1. we create the class, inheriting from pygame.
line 2. we "__init__" like usual.  
 Note: "__init__" has 2 underscores
line 3. we call the pygame "__init__"
​line 4. we load the image
  Note: I don't load it in the class because if we had 40 pipes it would be too slow
line 5. we make a rect according to the image
lines 6&7. we create the x and y
​line 10. I make a method called update
  Note: its name is important because it it one of the only methods that you can call for all the sprites in a group.
line 11. we display the image
line 12. we create the rect(x pos, y pos, width, height)
   Note: using self.rect = Rect (...) for the updated image is important for collision detection 
line 15. we load the pipe image.
line 16: we create a sprite group
line 18. we add members to the sprite group
line 20. we call the update method for all the sprites in the group

We would do a similar thing for flappy bird (including updating using self.rect = Rect (...) and store it in the bird object and then call these lines

1. if pygame.sprite.spritecollideany(bird, pipeGroup):
2.   print ('collision')