WSL下Python3.9安装pyminizip遇distutils.util缺失问题求助

在WSL环境中执行sudo pip3 install pyminizip时出现ModuleNotFoundError: No module named 'distutils.util'错误，尝试安装python3.9-distutils时，系统提示已安装最新版python3-distutils (3.8.10-0ubuntu1~20.04)。完整错误日志如下：

sudo pip3 install pyminizip
Traceback (most recent call last):
  File "/usr/bin/pip3", line 11, in <module>
    load_entry_point('pip==20.0.2', 'console_scripts', 'pip3')()
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 490, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2854, in load_entry_point
    return ep.load()
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2445, in load
    return self.resolve()
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2451, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/usr/lib/python3/dist-packages/pip/_internal/cli/main.py", line 10, in <module>
    from pip._internal.cli.autocompletion import autocomplete
  File "/usr/lib/python3/dist-packages/pip/_internal/cli/autocompletion.py", line 9, in <module>
    from pip._internal.cli.main_parser import create_main_parser
  File "/usr/lib/python3/dist-packages/pip/_internal/cli/main_parser.py", line 7, in <module>
    from pip._internal.cli import cmdoptions
  File "/usr/lib/python3/dist-packages/pip/_internal/cli/cmdoptions.py", line 19, in <module>
    from distutils.util import strtobool
ModuleNotFoundError: No module named 'distutils.util'

teunbergsma@DESKTOP-7IC0BEP:~/ITRL/1ITRL$ sudo apt-get install python3.9-distutils
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'python3-distutils' instead of 'python3.9-distutils'
python3-distutils is already the newest version (3.8.10-0ubuntu1~20.04).
0 upgraded, 0 newly installed, 0 to remove and 400 not upgraded.

核心问题是系统中同时存在多个Python版本，pip3绑定的Python版本（推测为3.9）未安装对应版本的distutils，而系统默认安装的是Python3.8的distutils。

步骤1：确认pip关联的Python版本 #

执行以下命令查看当前pip3对应的Python版本：

pip3 --version

根据输出确认版本（例如：pip 20.0.2 from /usr/lib/python3/dist-packages/pip (python 3.9)），再执行对应步骤。

步骤2：安装对应Python版本的distutils #

如果确认是Python3.9，先添加支持该版本的软件源（针对Ubuntu 20.04）：

sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt update

然后安装Python3.9的distutils：

sudo apt-get install python3.9-distutils

步骤3：用对应版本的pip安装pyminizip #

安装完成后，直接通过Python3.9的pip执行安装：

python3.9 -m pip install pyminizip

若已安装python3.9-pip，也可使用：

pip3.9 install pyminizip

备选方案：修复pip路径关联 #

如果不想添加第三方源，可重新安装对应版本的pip：

curl https://bootstrap.pypa.io/get-pip.py | python3.9

之后再执行pip3.9 install pyminizip即可。

内容的提问来源于stack exchange，提问作者Teun