Where is "pyvenv.py" in new Python3.4 environment on CentOS7?

[David Karr]

I'm just learning more about Python (although I've been a Java dev for many years, and C/C++ before that).

A book I'm reading (Learning Python Network Programming) refers to running "pyvenv".  I can find this in my Win7 environment, but I was planning on using my CentOS7 VM for most of this.  I have both "python" (Python 2) and "python3.4" installed.  I noticed a "python-virtualenv.noarch" package, but it said it was already installed.

Can someone elaborate on where I should be able to find or install this?

(I tried asking this on the #python IRC channel, but I guess I couldn't yell loud enough.)