更新 pip 和 setuptools==66.0 后，pip 停止工作并响应所有调用它的尝试，如下所示：
Traceback (most recent call last):
File "/usr/bin/pip", line 6, in <module>
from pkg_resources import load_entry_point
File "/usr/local/lib/python3.8/dist-packages/pkg_resources/__init__.py", line 3249, in <module>
def _initialize_master_working_set():
File "/usr/local/lib/python3.8/dist-packages/pkg_resources/__init__.py", line 3223, in _call_aside
f(*args, **kwargs)
File "/usr/local/lib/python3.8/dist-packages/pkg_resources/__init__.py", line 3261, in _initialize_master_working_set
working_set = WorkingSet._build_master()
File "/usr/local/lib/python3.8/dist-packages/pkg_resources/__init__.py", line 619, in _build_master
return cls._build_from_requirements(__requires__)
File "/usr/local/lib/python3.8/dist-packages/pkg_resources/__init__.py", line 632, in _build_from_requirements
dists = ws.resolve(reqs, Environment())
File "/usr/local/lib/python3.8/dist-packages/pkg_resources/__init__.py", line 1044, in __init__
self.scan(search_path)
File "/usr/local/lib/python3.8/dist-packages/pkg_resources/__init__.py", line 1077, in scan
self.add(dist)
File "/usr/local/lib/python3.8/dist-packages/pkg_resources/__init__.py", …