如何在Django admin中将递增的组号添加到查询集？

Question

现在我有：

fname   lname   group#
john    smith  
Mark    Tibbet
Martin  spacey
Cornel  willis
Jack    Sparrow

我的目标是让他们这样分组：

fname   lname   group#

john    smith   1 
Mark    Tibbet  1
Martin  spacey  2
Cornel  willis  2
Jack    Sparrow 3

所以基本上我想输入一个数字（比如说2），它给他们两个一组的数字，就像我上面展示的那样。有5个人，我想要两个人一组，即使没有足够的人，它仍然会这样分组，直到添加第6个人，然后再次运行操作。你知道怎么做吗

Answer 1

定义一个chuncker函数

def chunker(seq, size):
    return (seq[pos:pos + size] for pos in xrange(0, len(seq), size))

def assing_group_number(group,number):
    for member in group:
        member.group = number
        member.save()

users = User.objects.all()

chunk_size = 2 
group_number = 1
final_groups = []
for group_users in chunker(users, chunk_size):
    #here we are iterating over the users in groups of length = chunk size
    #and then assigning them a group_number
    assing_group_number(group_users,group_number)
    group_number += 1