Question

我正在使用django，我发现了一个非常令人困惑的问题。在我的views.py中就像这样

if request.method == "GET":
    raw_get = request.GET.dict()
    raw_data = ''
    draw = raw_get.get('draw', 0)
    if raw_url == "index":
        recordsTotal = Host.objects.count()
        raw_data = Host.objects.select_related('belongs_to_ostype').prefetch_related(
            'assignedip_set').select_related(
            'belongs_to_PlatForm').prefetch_related(
            'applications__with_vip').prefetch_related(
            'applications__belongs_to_apptype').prefetch_related('applications').all()
        start = time()
        data = {"data": [i.show_index() for i in raw_data], 'draw': draw, 'recordsTotal': recordsTotal,
                'recordsFiltered': recordsTotal}
        end = time()
        print 'cost time', end - start
        return JsonResponse(data)

从终端

显示费用时间，如下

cost time 10.1911799908
[21/Oct/2016 09:39:54] "GET /assets/data_index/?_=1477013984767 HTTP/1.1" 200 471123

Howerver，当我使用 python manager.py shell 时，我有了啰嗦

def test2():
    recordsTotal = Host.objects.count()
    start = time()
    data = {"data": [i.show_index() for i in raw_data], 'draw': 0, 'recordsTotal': recordsTotal,'recordsFiltered': recordsTotal}
    end = time()
    print 'cost time', end - start

此功能与views.py中的功能相同，但成本时间却大不相同。当我运行此功能时，花费时间就像这样

>>> test2()
cost time 4.91849398613

为什么？

在django视图中运行时间python shell

0 个答案: