Addressing python objects

问题

I'm trying to use ncclient for Python.

If I do this it works:

from ncclient import manager
m = manager.connect()

If I do this it fails:

import ncclient
m = ncclient.manager.connect()

The error is AttributeError: 'module' object has no attribute 'manager'.

I don't understand what the difference is. Shouldn't that be the same method either way? Why isn't it?

回答1:

Importing a module (package) does not automatically import submodule. (Some modules do. For example, importing os module also import os.path)

Replace following line:

import ncclient

with:

import ncclient.manager

to load the submodule manager.

来源：https://stackoverflow.com/questions/23965201/addressing-python-objects