Django 将去年的数据导出到csv将返回错误

我想从去年得到我的数据。但我的django在执行此操作时返回一个错误

错误是：

TypeError at /home/export_by_last_year/
export_by_last_year() takes 0 positional arguments but 1 was given

@views.py

def export_by_last_year():
    response = HttpResponse(content_type='text/csv')
    last_year = datetime.now().year - 1

    writer = csv.writer(response)
    writer.writerow(['Level', 'Amount', 'Timestamp'])

    for i in Rainfall.objects.filter(timestamp__year=last_year).values_list('level', 'amount', 'timestamp'):
        writer.writerow(i)

    response['Content-Disposition'] = 'attachment; filename="rainfall.csv"'

    return response

视图总是将'request'作为（第一个）参数，因此：

def export_by_last_year(request):
    # …

去年def导出（请求）： #…