Change shebang to /usr/bin/python3. Since the tool requires an Xcode (or at least Command line dev tools) install, this is reasonable.

gregneagle · gregneagle · commit 0184e8b43f1e · 2022-03-18T09:30:37.000-07:00
diff --git a/make_relocatable_python_framework.py b/make_relocatable_python_framework.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python3
 # encoding: utf-8
 #
 # Copyright 2018 Greg Neagle.
