I've used pip3 install pygal
to install Pygal. My terminal tells me:
Requirement already satisfied: pygal in /Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages (2.4.0)
The pygal documentation page says pygal is only available for python 2.7 and 3.2, 3.3, 3.4, 3.5 and pypy.
So! What is one to do if they're working with Python 3.7.4??
In case it matters, I'm working with a macOS 10.14.6