第17月第28天 python yield

1.

class Fab(object): 

   def __init__(self, max):
       self.max = max
       self.n, self.a, self.b = 0, 0, 1 

   def __iter__(self):
       return self 

   def next(self):
       if self.n < self.max:
           r = self.b
           self.a, self.b = self.b, self.a + self.b
           self.n = self.n + 1
           return r
       raise StopIteration()

def fab(max):
    n, a, b = 0, 0, 1
    while n < max:
        yield b
        # print b
        a, b = b, a + b
        n = n + 1 

https://www.ibm.com/developerworks/cn/opensource/os-cn-python-yield/

2.python 文章

http://python.jobbole.com/all-posts/page/7/