How to use the django.http.HttpResponse function in Django

'uptime',
            'topmost_filenames',
            'reason',
            'app_notes',
            'release_channel',
        ),
        '_results_number': batch_size,
        '_results_offset': 0,
    }
    api = SuperSearch()
    # Do the first query. That'll give us the total and the first page's
    # worth of crashes.
    data = api.get(**params)
    assert 'hits' in data

    response = http.HttpResponse(content_type='text/csv')

    out = six.StringIO()
    writer = csv.writer(out, dialect=csv.excel, delimiter='\t')
    writer.writerow([
        smart_text(part) for part in GRAPHICS_REPORT_HEADER
    ])

    pages = data['total'] // batch_size
    # if there is a remainder, add one more page
    if data['total'] % batch_size:
        pages += 1
    alias = {
        'crash_id': 'uuid',
        'os_name': 'platform',
        'os_version': 'platform_version',
        'date_processed': 'date',

def edit_job(request):
    activate(request.user.extended.language)

    if request.method != 'POST':
        return HttpResponse('')

    job_id = request.POST.get('job_id', 0)

    try:
        job = Job.objects.get(pk=int(job_id))
    except ObjectDoesNotExist:
        return HttpResponse('')
    if not jobs.utils.JobAccess(request.user, job).can_edit():
        return HttpResponse('')

    version = int(request.POST.get('version', 0))
    if version > 0:
        job_version = job.versions.get(version=version)
    else:
        job_version = job.versions.order_by('-change_date')[0]

    job_versions = []
    for j in job.versions.order_by('-version'):
        if j.version == job.version:
            title = _("Current version")
        else:
            job_time = j.change_date.astimezone(pytz.timezone(request.user.extended.timezone))
            title = '%s (%s): %s' % (job_time.strftime("%d.%m.%Y %H:%M:%S"), j.change_author.get_full_name(), j.comment)

def allowed_actions(request, slug):
    survey = _get_survey_or_404(slug, request)
    authenticated = request.user.is_authenticated()
    response = HttpResponse(mimetype='application/json')
    dump({"enter": _can_show_form(request, survey),
          "view": survey.can_have_public_submissions(),
          "open": survey.is_open,
          "need_login": survey.require_login and not authenticated}, response)
    return response

def post(self, request, *args, **kwargs):
        self.object = self.get_object()
        self.object.hidden_by.remove(self.request.user)
        data = {
            'success': True,
        }
        return http.HttpResponse(json.dumps(data), content_type='application/json')

def _finalize_response(self, response):
        """ Convert the ``Response`` object into django's ``HttpResponse``

        :return: django's ``HttpResponse``
        """

        res = HttpResponse(content=response.content,
                           content_type=self._get_content_type())
        # status_code is set separately to allow zero
        res.status_code = response.code
        return res

def ajaxstaffverificationdeleteimage(request, verification, image):
    if not request.user.is_authenticated() or request.user.is_anonymous() or not request.user.is_staff:
        raise PermissionDenied()
    verification = get_object_or_404(models.VerificationRequest, pk=verification)
    imageObject = verification.images.get(pk=image)
    imageObject.image.delete()
    imageObject.delete()
    return HttpResponse('deleted')

def getFTPdirectories(request):
    if request.GET.has_key('address') and request.GET.has_key('username') and request.GET.has_key('password'):
        address = request.GET['address']
        username = request.GET['username']
        password = request.GET['password']
        if request.GET.has_key('directory'):
            directory = request.GET['directory']
        else:
            directory = '/'
        return HttpResponse(simplejson.dumps(testftp.runFTP(address, directory, username=username, password=password)))
    
    return HttpResponse('Improper request')

def post(self, request):
        register_form = ZcForm(request.POST)
        if register_form.is_valid():
            #获取所有的注册的post数据
            usernames = request.POST.get("username", "")
            password = request.POST.get("password", "")
            password2 = request.POST.get("confirm_password", "")
            phone_number = request.POST.get("phone_number", "")
            email = request.POST.get("email", "")
            #来判断用户名，邮箱，手机号是否注册过, 以及用户名密码是否正确
            if UserProFile.objects.filter(username=usernames):
                return HttpResponse('{"messages":"cw", "cw":"用户名存在"}', content_type='application/json')
            if UserProFile.objects.filter(mobile=phone_number):
                return HttpResponse('{"messages":"cw", "cw":"手机号已经存在"}', content_type='application/json')
            if UserProFile.objects.filter(email=email):
                return HttpResponse('{"messages":"cw", "cw":"邮箱已经存在"}', content_type='application/json')
            if password == password2:
                new_user = UserProFile()
                new_user.nick_name = usernames
                new_user.password = make_password(password)
                new_user.mobile = phone_number
                new_user.email = email
                new_user.is_jh = False
                new_user.username = usernames
                new_user.save()
                #注册成功后给用户发送一个激活邮件
                send_register_email(email, "register", new_user.nick_name)
                #注册成功后给用户发送一个系统消息
                messages = Messages()
                messages.user_name = new_user.id

def traffic(self, request):
        try:
            days_count = int(request.GET.get('days', 30))
        except ValueError:
            days_count = 30

        if days_count < 10:
            days_step = 1
        elif days_count < 60:
            days_step = 2
        else:
            days_step = 30

        days = [date.today() - timedelta(day) for day in xrange(0, days_count, days_step)]
        days_qs = [(day, Request.objects.day(date=day)) for day in days]
        return HttpResponse(simplejson.dumps(modules.graph(days_qs)), mimetype='text/javascript')

if tags:
                q['tags'] = ','.join(tags)
                q['tag_mode'] = tag_mode
            if text:
                q['text'] = text
            query = q.urlencode()

            scope = ["/flickr/?%s" % query]

            proxies = settings.FLICKR_PROXIES \
                if form.cleaned_data['proxied'] else None
            cookie = generate_cookie_django(
                scope, settings.FLICKR_SERVERS, proxies,
                blaster=getattr(settings, 'FLICKR_BLASTER', None))

            return HttpResponse(cookie, content_type='application/x-diamond-scope')
    else:
        form = FlickrForm()

    return render(request, 'scopeserver/simple_form.html', {
        'form': form,
    })