python3----基础 用while循环+iter()+next() 实现对字符串的遍历与输出

my_str = 'hello'
# for循环
for v in my_str:
    print(v)
# while 配合迭代器实现字符串的遍历
ite = iter(my_str)
while True:
    try:
        each = next(ite)
    except StopIteration:
        break
    print(each)

results:
h
e
l
l
o
h
e
l
l
o