Magic Optimisation

[simonwittber at gmail.com]

>     def loop(self):
>         self_pool = self.pool
>         self_call_exit_funcs = self.call_exit_funcs
>         self_pool_popleft = self.pool.popleft
>         self_pool_append = self.pool.append
>         check = self.pool.__len__
>         while check() > 0:
>             task = self_pool_popleft()
>             try:
>                 task.next()
>             except StopIteration:
>                 self_call_exit_funcs(task)
>                 return
>             self_pool_append(task)

Stupid me. the 'return' statement above should be 'continue'. Sorry for
the confusion.