python - 为什么添加用户功能在pyftpdlib中不起作用

Question

我正在使用 pyftpdlib 制作一个 Web 服务器，但由于某种原因，该add_user()功能不起作用并给了我一个错误代码：

from pyftpdlib.authorizers import DummyAuthorizer
from pyftpdlib.handlers import FTPHandler
from pyftpdlib.servers import FTPServer

ip = socket.gethostbyname(socket.gethostname())
PATH = 'C:/Users/cuerv/Downloads/My code/Camera/Recordings'
os.chdir(PATH)

addr = (ip,21)
authorizer = DummyAuthorizer
authorizer.add_user('admin','adminpass','.',perm='elradfmw')

handler = FTPHandler
handler.authorizer = authorizer
server = FTPServer(addr,handler)
server.serve_forever()

错误：

  File "C:/Users/cuerv/Downloads/My code/Camera/test.py", line 12, in <module>
    authorizer.add_user('admin','adminpass','.',perm='elradfmw')
TypeError: add_user() missing 1 required positional argument: 'homedir'```