已安装python3-venv和python3.8-venv仍提示ensurepip缺失求助

报错信息 #

已安装所需开发库和venv相关依赖，创建Python3.8虚拟环境时触发如下报错：

~/Desktop/virtualenvs$ python3.8 -m venv newpy38
The virtual environment was not created successfully because ensurepip is not
available.  On Debian/Ubuntu systems, you need to install the python3-venv
package using the following command.

    apt-get install python3-venv

You may need to use sudo with that command.  After installing the python3-venv
package, recreate your virtual environment.

Failing command: ['/home/dji/Desktop/virtualenvs/newpy38/bin/python3.8', '-Im', 'ensurepip', '--upgrade', '--default-pip']

依赖验证 #

运行如下命令确认venv相关包已正确安装：

1. 验证系统默认venv包：

~/Desktop/virtualenvs$ sudo apt-get install python3-venv
Reading package lists... Done
Building dependency tree       
Reading state information... Done
python3-venv is already the newest version (3.6.7-1~18.04).
0 upgraded, 0 newly installed, 0 removed and 458 not upgraded.

2. 验证Python3.8专属venv包：

~/Desktop/virtualenvs$ sudo apt-get install python3.8-venv
Reading package lists... Done
Building dependency tree       
Reading state information... Done
python3.8-venv is already the newest version (3.8.0-3~18.04.1).
0 upgraded, 0 newly installed, 0 removed and 458 not upgraded.

已尝试的无效操作 #

• 社区公开的venv ensurepip缺失类报错通用解决方案
• 执行sudo dpkg-reconfigure locales重置系统本地化配置（该操作与venv功能无直接关联）

最终解决方案 #

卸载当前Python3.8版本后重新安装，venv虚拟环境创建功能恢复正常，具体报错诱因暂未明确。

内容的提问来源于stack exchange，提问作者fatbringer