限制从python生成器获得的项目数

有没有比下面更简洁的方法来限制发电机的项目数量

def next_dummy_item():
    for i in range(1, 10):
        yield i

item_count = 0
for item in next_dummy_item(): # can't use slicing here :(
  item_count += 1             
  # process item
  if item_count > 5:
    break

使用：

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@200好的，谢谢，但我找不到(

def next_dummy_item():
    for i in range(1, 10):
        yield i

for item in itertools.islice(next_dummy_item(), 5):
    # process item