痛苦的信仰

纯复制黏贴，原文在这：http://blog.youkuaiyun.com/preterhuman_peak/article/details/40615201 如何生成斐波那契數列 斐波那契（Fibonacci）數列是一个非常简单的递归数列，除第一个和第二个数外，任意一个数都可由前两个数相加得到。用计算机程序输出斐波那契數列的前 N 个数是一个非常简单的问题，许多初学者都可以轻易写出如下函数：

with open(...) as f: for line in f: The with statement handles opening and closing the file, including if an exception is raised in the inner block. The for line in f treats the file