在塔中上传文件的KeyError

Question

当我尝试使用此pylons脚本上传时，我一直收到KeyError：'permanent_store'错误

我的控制器

类UploadController（BaseController）：

def index(self):
    return render('/uploadform.html')

def upload(self):
    myfile = request.POST['myfile']
    permanent_file = open(
    os.path.join(
        config['app_conf']['permanent_store'],
        myfile.filename.replace(os.sep,'_')
        ),
        'wb'
        )
    shutil.copyfileobj(myfile.file, permanent_file)
    myfile.file.close()
    permanent_file.close()

    return "Uploaded %s, description: %s" % (
                myfile.filename,
                request.POST['description']
                )

def download(self):
    requested_filename = request.params['requested_filename']
    filename = os.path.join (
        config['app_conf']['permanent_store'],
        requested_filename.replace(os.sep, '_')
        )
    if not os.path.exists(filename):
        return "No such file"
    permanent_file = open(filename, 'rb')
    data = permanent_file.read()
    permanent_file.close()
    response.content_type = guess_type(filename)[0] or 'text/plain'
    return data

这是我的development.ini

的一部分

[app:main]
use = egg:FormDemo
full_stack = true
static_files = true
permanent_store = %(here)s/data/uploads

由于与permanent_store有关，我无法上传或下载文件。