Python 从sprites.Group（）中删除/删除前N个或最后N个

假设你有一个精灵小组，你在其中添加了很多东西：

all_shelfs = pygame.sprite.Group()
shelf_tracking_list = []

#making shelfs
build_lvl = HEIGHT - 150
#group A
for i in xrange(100):
    wid = random.randint(120,320)
    pos = [random.randint(0, WIDTH-wid), random.randint(build_lvl-20, build_lvl), wid]
    all_shelfs.add(Shelf(pos[0],pos[1], pos[2]))
    build_lvl = build_lvl - 60

#group B
for i in xrange(100):
    wid = random.randint(120,320)
    pos = [random.randint(0, WIDTH-wid), random.randint(build_lvl-20, build_lvl), wid]
    all_shelfs.add(Shelf(pos[0],pos[1], pos[2]))
    build_lvl = build_lvl - 60
#group C
for i in xrange(100):
    wid = random.randint(120,320)
    pos = [random.randint(0, WIDTH-wid), random.randint(build_lvl-20, build_lvl), wid]
    all_shelfs.add(Shelf(pos[0],pos[1], pos[2]))
    build_lvl = build_lvl - 60

shelf_tracking_list = all_shelfs.sprites()

例如，如何删除组A？

---

这是我添加的第一组。我注意到我无法使用此工具架跟踪列表修改组

如果要跟踪每个组中的精灵，可以使用

sprite.group.remove（*sprites）

函数删除整个组，如此处文档中所述：

然后，当您要从

所有\u shelfs

中删除整个组时：

all_shelfs.remove(group_a)

因为您正在询问如何删除逻辑组，而不仅仅是N个元素：根据您的程序，将精灵放入多个组可能会大大简化操作

可以将精灵放置在多个组中以引用同一精灵。然后，如果您

kill（）

it，则会将其从所有组中删除。否则

删除（*组）

以删除特定组

for i in xrange(100):
    wid = random.randint(120,320)
    pos = [random.randint(0, WIDTH-wid), random.randint(build_lvl-20, build_lvl), wid]
    shelf = Shelf(pos[0],pos[1], pos[2])
    all_shelfs.add(shelf)
    shelfs_a.add(shelf)
    build_lvl = build_lvl - 60

#group B
for i in xrange(100):
    wid = random.randint(120,320)
    pos = [random.randint(0, WIDTH-wid), random.randint(build_lvl-20, build_lvl), wid]
    shelf = Shelf(pos[0],pos[1], pos[2])
    all_shelfs.add(shelf)
    shelfs_b.add(shelf)
    build_lvl = build_lvl - 60

# ...

# then to erase from both groups
for shelf in shelfs_a:
    shelf.kill()

for i in xrange(100):
    wid = random.randint(120,320)
    pos = [random.randint(0, WIDTH-wid), random.randint(build_lvl-20, build_lvl), wid]
    shelf = Shelf(pos[0],pos[1], pos[2])
    all_shelfs.add(shelf)
    shelfs_a.add(shelf)
    build_lvl = build_lvl - 60

#group B
for i in xrange(100):
    wid = random.randint(120,320)
    pos = [random.randint(0, WIDTH-wid), random.randint(build_lvl-20, build_lvl), wid]
    shelf = Shelf(pos[0],pos[1], pos[2])
    all_shelfs.add(shelf)
    shelfs_b.add(shelf)
    build_lvl = build_lvl - 60

# ...

# then to erase from both groups
for shelf in shelfs_a:
    shelf.kill()