Can't install PyGObject on macOS

Question

I'm using macOS
Python versions: 2.7 / 3.6

pip3 :

$ pip3 install PyGObject
Collecting PyGObject
Could not find a version that satisfies the requirement PyGObject (from versions:)
No matching distribution found for PyGObject

Same result for pip and pip2.x

Why can't I find it?
What's the alternative way installing PyGObject on macOS?

Answer 1

Try to use

brew install pygobject3