如何将django settings.py与mongo db连接？

Question

这是我的代码，用于将django应用程序与mongo db地图集连接起来。

DATABASES = {
    'default': {
        'ENGINE': 'djongo',
        'NAME': 'db_name',
        'USER': username,
        'PASSWORD': password,
        'HOST': 'mongodb+srv://%s:%s@save4thpillar-sonvx.mongodb.net/test?retryWrites=true'% (username, password),
        'PORT': 27017,
    }
}

我遇到以下错误

Performing system checks...

System check identified no issues (0 silenced).
Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x7f5b85e69a60>
Traceback (most recent call last):
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.
 File "/home/nadeem/Documents/backendAPI/myvenv/lib/python3.6/site-packages/pymongo/topology.py", line 183, in select_servers
    selector, server_timeout, address)
  File "/home/nedeem/Documents/backendAPI/myvenv/lib/python3.6/site-packages/pymongo/topology.py", line 199, in _select_servers_loop
    self._error_message(selector))

请帮助我建立联系。