python代码分析04_shad_ow的博客

class fls(object):#创建一个类，继承于object
    def __init__(self, val, times):#初始化val,times
        self.val = val
        self.count = times

    def __getitem__(self, n):#调用了python中__getitem__方法，相当于通过n可以查找相应的value.
        if n >= self.count:
            raise IndexError("Object has no item %s %n")
        return self.val

thing = fls("*", 5)#实例化fls
for c in thing:#c和5比较，如果小就返回*,这里for循环可以遍历thing实例，是因为调用了__getitem__内置函数
    print(c)#打印*

thing = fls(120, 3)
for c in thing:
    print(c)class fls(object):#创建一个类，继承于object
    def __in