1. 使用迭代器的方式完成斐波那契
题解:1. 使用iter方法; 2. 使用next方法
2. 代码
class Fibonacci(object):
def __init__(self, index):
self.index = index
self.current_number = 0
self.a = 0
self.b = 1
def __iter__(self):
return self
def __next__(self):
if self.current_number < self.index:
res = self.a
self.a, self.b = self.b, self.a + self.b
self.current_number += 1
return res
else:
raise StopIteration
fibo = Fibonacci(10)
for num in fibo:
print(num)