无法在Ubuntu 18.04.3 LTS上安装python3.6-venv

无法在Ubuntu 18.04.3 LTS上安装python3.6-venv,ubuntu,apt-get,python-venv,Ubuntu,Apt Get,Python Venv,我在运行Ubuntu18.04.3 LTS的计算机上内置了python3。 我无法安装python3.6-venv。它显示以下错误: Reading package lists... Done Building dependency tree Reading state information... Done Package python3.6-venv is not available, but is referred to by another package. This ma

我在运行Ubuntu18.04.3 LTS的计算机上内置了
python3
。 我无法安装
python3.6-venv
。它显示以下错误:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package python3.6-venv is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'python3.6-venv' has no installation candidate

正如其他一些SO帖子所建议的,我也运行了
apt get update
,但问题仍然存在。请告知。

apt get update
为我解决了此问题

如何使用
pip
安装它?根据: