virtualenv and ubuntu

[stone.zhong at gmail.com]

Hi there,

Sorry if the question is naive, I am on Ubuntu 16.04 with Python 3.5.2, now I want to use virtualenv, I noticed there are two ways to get virtualenv installed:

1) do "sudo apt-get install virtualenv"
2) do "pip3 install virtualenv"

What is the preferred way to install virtualenv?

Thanks,
Stone