Question

当我在Flask应用程序上执行“foreman start”时，我遇到了这个问题。

(venv)Macbook-err:Example ld$ foreman start
14:01:50 web.1  | started with pid 1441
14:01:50 web.1  | Traceback (most recent call last):
14:01:50 web.1  |   File "app.py", line 26, in <module>
14:01:50 web.1  |     connect('mydata', host=os.environ.get('MONGOLAB_URI'))
14:01:50 web.1  |   File "/Users/ld/Dropbox/Semester4/Example/venv/lib/python2.7/site-packages/mongoengine/connection.py", line 160, in connect
14:01:50 web.1  |     register_connection(alias, db, **kwargs)
14:01:50 web.1  |   File "/Users/ld/Dropbox/Semester4/Example/venv/lib/python2.7/site-packages/mongoengine/connection.py", line 54, in register_connection
14:01:50 web.1  |     if "://" in host:
14:01:50 web.1  | TypeError: argument of type 'NoneType' is not iterable
14:01:50 web.1  | exited with code 1
14:01:50 system | sending SIGTERM to all processes
SIGTERM received

在我的app.py（第26行）中我有：

connect('mydata', host=os.environ.get('MONGOLAB_URI'))
app.logger.debug("Connecting to MongoLabs")

我做了heroku config | grep MONGOLAB_URI > .env所以.env文件应该是合法的。

有什么建议吗？

Answer 1

heroku config | grep MONGOLAB_URI > .env输出格式为MONGOLAB_URI: mong...，应更改为MONGOLAB_URI=mongo....

Answer 2

如果您使用带有两个箭头的heroku config | grep MONGOLAB_URI >> .env代替它会有帮助吗？要附加输出？

回复：https://github.com/johnschimmel/itp-dwd-flask-s3-upload

Flask Mongolab错误：TypeError：类型为'NoneType'的参数不可迭代

2 个答案: