我将 python 更新为 python3.9，当我尝试安装时pip，出现错误：
lors@Lenovo:~$ pip3 install pipenv
Traceback (most recent call last):
File "/usr/bin/pip3", line 9, in <module>
from pip import main
File "/usr/lib/python3/dist-packages/pip/__init__.py", line 29, in <module>
from pip.utils import get_installed_distributions, get_prog
File "/usr/lib/python3/dist-packages/pip/utils/__init__.py", line 23, in <module>
from pip.locations import (
File "/usr/lib/python3/dist-packages/pip/locations.py", line 9, in <module>
from distutils import sysconfig
ImportError: cannot import name 'sysconfig' from 'distutils' (/usr/lib/python3.9/distutils/__init__.py)