data = []

for i in range(, ):

    tmp = {"id": i, "name": "alex-{}".format(i)}

    data.append(tmp)

print(data)

def user_list(request):

    # user_list = data[:]

    # user_list = data[:]

    try:

        current_page = int(request.GET.get("page"))

    except Exception as e:

        current_page = 

    per_page = 

    # 数据总条数

    total_count = len(data)

    # 总页码

    total_page, more = divmod(total_count, per_page)

    if more:

        total_page += 

    # 页面最多显示多少个页码

    max_show =

    half_show = int((max_show-)/)

    if current_page <= half_show:

        show_start =

        show_end = max_show

    else:

        if current_page + half_show >= total_page:

            show_start = total_page - max_show

            show_end = total_page

        else:

            show_start = current_page - half_show

            show_end = current_page + half_show

    # 数据库中获取数据

    data_start = (current_page - ) * per_page

    data_end = current_page * per_page

    user_list = data[data_start:data_end]

    # 生成页面上显示的页码

    page_html_list = []

    # 加首页

    first_li = '<li><a href="/user_list/?page=1">首页</a></li>'

    page_html_list.append(first_li)

    # 加上一页

    if current_page == :

        prev_li = '<li><a href="#">上一页</a></li>'

    else:

        prev_li = '<li><a href="/user_list/?page={}">上一页</a></li>'.format(current_page - )

    page_html_list.append(prev_li)

    for i in range(show_start, show_end+):

        if i == current_page:

            li_tag = '<li class="active"><a href="/user_list/?page={0}">{0}</a></li>'.format(i)

        else:

            li_tag = '<li><a href="/user_list/?page={0}">{0}</a></li>'.format(i)

        page_html_list.append(li_tag)

    # 加下一页

    if current_page == total_page:

        next_li = '<li><a href="#">下一页</a></li>'

    else:

        next_li = '<li><a href="/user_list/?page={}">下一页</a></li>'.format(current_page+)

    page_html_list.append(next_li)

    # 加尾页

    page_end_li = '<li><a href="/user_list/?page={}">尾页</a></li>'.format(total_page)

    page_html_list.append(page_end_li)

    page_html = "".join(page_html_list)

    return render(request, "user_list.html", {"user_list": user_list, "page_html": page_html})

class Pagination(object):

    def __init__(self, current_page, total_count, base_url, per_page=, max_show=):

        """

        :param current_page: 当前页

        :param total_count: 数据库中数据总数

        :param per_page: 每页显示多少条数据

        :param max_show: 最多显示多少页

        """

        try:

            current_page = int(current_page)

        except Exception as e:

            current_page = 

        self.current_page = current_page

        self.total_count = total_count

        self.base_url = base_url

        self.per_page = per_page

        self.max_show = max_show

        # 总页码

        total_page, more = divmod(total_count, per_page)

        if more:

            total_page += 

        half_show = int((max_show - ) / )

        self.half_show = half_show

        self.total_page = total_page

    @property

    def start(self):

        return (self.current_page - ) * self.per_page

    @property

    def end(self):

        return self.current_page * self.per_page

    def page_html(self):

        if self.current_page <= self.half_show:

            show_start =

            show_end = self.max_show

        else:

            if self.current_page + self.half_show >= self.total_page:

                show_start = self.total_page - self.max_show

                show_end = self.total_page

            else:

                show_start = self.current_page - self.half_show

                show_end = self.current_page + self.half_show

                # 生成页面上显示的页码

        page_html_list = []

        # 加首页

        first_li = '<li><a href="{}?page=1">首页</a></li>'.format(self.base_url)

        page_html_list.append(first_li)

        # 加上一页

        if self.current_page == :

            prev_li = '<li><a href="#">上一页</a></li>'

        else:

            prev_li = '<li><a href="{0}?page={1}">上一页</a></li>'.format(self.base_url, self.current_page - )

        page_html_list.append(prev_li)

        for i in range(show_start, show_end + ):

            if i == self.current_page:

                li_tag = '<li class="active"><a href="{0}?page={1}">{1}</a></li>'.format(self.base_url, i)

            else:

                li_tag = '<li><a href="{0}?page={1}">{1}</a></li>'.format(self.base_url, i)

            page_html_list.append(li_tag)

        # 加下一页

        if self.current_page == self.total_page:

            next_li = '<li><a href="#">下一页</a></li>'

        else:

            next_li = '<li><a href="{0}?page={1}">下一页</a></li>'.format(self.base_url, self.current_page + )

        page_html_list.append(next_li)

        # 加尾页

        page_end_li = '<li><a href="{0}?page={1}">尾页</a></li>'.format(self.base_url, self.total_page)

        page_html_list.append(page_end_li)

        return "".join(page_html_list)

def user_list(request):

    pager = Pagination(request.GET.get("page"), len(data), request.path_info)

    user_list = data[pager.start:pager.end]

    page_html = pager.page_html()

    return render(request, "user_list.html", {"user_list": user_list, "page_html": page_html})