The virtual environment was not created successfully because ensurepip is not available.

问题

 python3 -m venv venv
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 install python3.10-venv

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

Failing command: ['/root/venv/bin/python3', '-Im', 'ensurepip', '--upgrade', '--default-pip']

原因

无法创建虚拟环境，因为系统中缺少ensurepip。ensurepip是Python的一个模块，用于确保安装了pip，从而能够方便地安装Python包。

根据错误消息，您可以按照建议尝试安装python3-venv包。您可以使用以下命令来安装它：

sudo apt install python3-venv

执行完上述命令后，回车确认，重新尝试创建虚拟环境，应该就不会再遇到相同的问题了。