There are many useful tools and utilities that are written in Python. Here are a few I use regularly:
How do you install these tools? By now you should know that installing external packages into your system Python environment is a terrible idea. Most of these tools have dependencies of their own, so using a shared virtual environment is not a foolproof solution either.
Pipsi (pip script installer) is a
pip that you can use to easily install Python
tools into their own virtual environment.
The readme on Github will tell you all you need to know. I just want to post this here in case you haven't heard of it yet - I only found out about it earlier this year myself. I'm sure you'll find it useful.