我有一个简单的导入失败了

from upwork.routers.jobs import search
ModuleNotFoundError: No module named 'upwork.routers'

参考：https://upwork.github.io/python-upwork-oauth2/routers/jobs/search.html
https://developers.upwork.com/?lang=python#jobs
代码：

#!/usr/bin/env python

import upwork
from upwork.routers.jobs import search

是的

$ pip install upwork
$ pip list | grep upwork
upwork 1.0.22

怎么啦？