余数

"""
输出文件的内容，按照五个一页的元素进行分类（divmod算商和余数）
"""
with open('TG.txt',encoding='utf-8') as f:
    l=f.readlines()
jk=[]
for i in l:
    jk.append(str(l.index(i)+1)+'.'+i)
# print(len(jk))
div,mod=divmod(len(jk),5)
# print(div,mod)
m=0
while m<3:
    page_num = input("请输入页码: ")
    if int(page_num)>0 and int(page_num)<div+1:
        for n in range(5):
            print(jk[((int(page_num)-1)*5+n)].strip())
    elif int(page_num)==div+1:
        for n in range(mod):
            print(jk[div*5+n].strip())
    else:
        m += 1
        print("请重新输入页码%s次,错误3次就会终止程序" %m)