lis = []

n = 10  #每页显示10条信息

with open('小文件',mode='r',encoding='utf-8')as f:

    content = f.readlines()

    for line in content:

        line_str = " ".join(line.strip().split('|'))    #读取每一行,去换行符,转化成'飞机 1000'

        lis.append(line_str)    #将每条字符串添加至列表中

    first_line = lis.pop(0)     #删除列表中的第一个元素 ,即第一行内容,并赋给first_line

    page,end = divmod(len(lis),n)   #如果end!=0则最后一页有内容

    if end != 0:

        page+=1  #页码总数+1,为真正页码数

    num = int(input('请输入页码:'))

    each_page_content = lis[(num-1)*n:num*n]

    for i in range(len(each_page_content)):

        print(i+1,each_page_content[i])

while True:

    n = 10

    count = 0

    lis_page = []

    num = int(input('请输入页码:'))

    page_ends = num*n

    page_starts = (num-1)*n

    with open('大文件',mode='r',encoding='utf-8')as f:

        first_line = f.readline()   #读完第一行后,光标到了第一行结尾 ,继续读取文件从第二行开始

        print(first_line)   #让每次循环时都打印第一行

        for line in f:

            count += 1

            if page_ends < count :

                break

            if page_starts < count:

                lis_page.append(line)

    for i in range(len(lis_page)) :

        print(i+1,lis_page[i])