def fib(max): n, a, b = 0, 0, 1 while n < max: print(b) a, b = b, a + b n = n + 1 return ‘done‘
注意，赋值语句：
a, b = b, a + b
相当于：
t = (b, a + b) # t是一个tuple a = t[0] b = t[1]
python斐波拉契数列
原文：http://www.cnblogs.com/python3-study/p/6366525.html
