Add installation path to py3test.py

bindings/py3test.py

@@ -1,7 +1,8 @@
 #!/usr/bin/env python3
 # -*- coding: utf-8 -*-
-
 import sys
+# Change this path to match your "make install" path
+sys.path.append('/usr/local/lib/python3.8/site-packages')
 
 ## Uncomment to run this script from an in-tree build (or adjust to the
 ## build directory) without installing the bindings.