大小文件读取并分页展示

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])