python分页处理

# @Time     :2019/6/17 16:00
# -*- encoding:utf-8 -*-

data_list = []
for i in range(1, 901):
    data_list.append('alex-%s' % i)


class Page:
    '''
    处理分页相关的代码
    '''

    def __init__(self, page, per_page_num=10):
        '''
        数据初始化一个900条数据的列表
        :param page: 要查看的页码
        :param per_page_num: 默认每页显示10条
        '''
        self.page = page
        self.per_page_num = per_page_num

    @property
    def start(self):
        return (self.page - 1) * self.per_page_num

    @property
    def end(self):
        return self.page * self.per_page_num

    ###################写法一.###################
    # while True:
    #     # 1. 要查看的页面
    #     page = int(input('请输入要查看的页码:'))
    #
    #     # 2. 每页显示 10 条
    #     #per_page_num=10
    #     obj = Page(page)
    #     page_data_list = data_list[obj.start:obj.end]
    #     for item in page_data_list:
    #         print(item)

    ###################写法二.###################

    def run(self, start, end):
        page_data_list = data_list[start:end]
        for item in page_data_list:
            print(item)


while True:
    page = int(input('请输入要查看的页码:'))
    obj = Page(page)
    obj.run(obj.start, obj.end)