Trampoline -- python 尾递归优化方案 (并不理想）

trampo

from types import GeneratorType

def trampo(func):
    def _(*args, **kwargs):
        g = func(*args, **kwargs)
        while isinstance(g, GeneratorType):
            g = g.next()
        return g
    return _

@trampo    
def fibo(count, cur=0, next_=1):
    if count <= 1:
        yield cur
    else:
        yield fibo(count-1, next_, cur+ next_)

参考了Bouncing Python's Generators With a Trampoline , 但实际上并不成功。