python如何计算n行字符串的长度？

输入
4
learn.abcd.edu.cn
good student
ABCD
193.168.60.220

输出
17
12
4
14

n = int(input())
s = [input() for _ in range(n)]
for i in s:
    print(len(i))

a = 'learn.abcd.edu.cn'
print(len(a))
b = 'good student'
print(len(b))
后面的照葫芦画瓢

ret = []
for _ in range(4):
    x = input('')
    ret.append(x)
for x in ret:
    print(len(x))

• 可以看下python参考手册中的 python- 字符串