下载并遍历 names.txt 文件，输出长度最长的回文人名。

def is_pamax(name):
    low = 0
    up = len(name)-1
    while low < up:
        if name[low] != name[up]:
            return  False
        low += 1
        up -= 1
    return True


f = open("D:/names.txt")

max_length = 0
for line in f:
    name = line.strip()
    if is_pamax(name):
        temp_length = len(name)
        if temp_length > max_length:
            max_length=temp_length

print max_length

f.close()

# maxlength=8
f = open("D:/names.txt")
for line in f:
    name = line.strip()
    if is_pamax(name):
        if 8 == len(name):
            print name
f.close()

names.txt文档下载

原文：http://my.oschina.net/u/1431368/blog/305800