ModuleNotFoundError: No module named ‘mmpose‘

最近在尝试部署mmpose，运行webcam_demo.py时报如下错，看contextlib已经安装了，网上也搜不到原因，google后才知道是python的版本太低，需要python3.7以上的才可以，看了下我装的python果然是3.6版本，使用conda新建一个Python3.7版本以上的即可解决。

xxx@lc:~/workspace/mmpose-master$ python3 demo/webcam_demo.py demo/webcam_cfg/gesture_recognition.py
Traceback (most recent call last):
  File "demo/webcam_demo.py", line 15, in <module>
    from mmpose.apis.webcam import WebcamExecutor
  File "/home/xxx/workspace/mmpose-master/mmpose/apis/webcam/__init__.py", line 2, in <module>
    from .webcam_executor import WebcamExecutor
  File "/home/xxx/workspace/mmpose-master/mmpose/apis/webcam/webcam_executor.py", line 6, in <module>
    from contextlib import nullcontext
ImportError: cannot import name 'nullcontext'

参考

python - OpenAI Gym - AttributeError: module 'contextlib' has no attribute 'nullcontext' - Stack Overflow