External Actions

Execute external shell commands from Blender via the subprocess module:

import os, sys, subprocess

# open a command prompt in the Blender install directory
subprocess.run(["start", "cmd.exe", os.getcwd()], shell=True)

# Open an explorer window in the Blender instlal directory
subprocess.run(["explorer.exe", os.getcwd()])

Python Libraries

To install external libraries in Blender Python, you need to ensure PIP is available:

.\python -m ensurepip --default-pip

Once that is assured, you can install any library like this (Pillow as an example):

.\python -m pip install Pillow

After that you can use the lib in any script:

From PIL import image
# ...

Useful libraries for Python

• Pillow: Various image related functionality
• PySide: Additional UI functionality