Install python script, adjusting the shebang

install-python

@@ -0,0 +1,24 @@
+#!/usr/bin/env python3
+
+import argparse
+import shutil
+import sys
+
+ap = argparse.ArgumentParser()
+ap.add_argument("source")
+ap.add_argument("destination")
+
+args = ap.parse_args()
+
+with open(args.source) as inf:
+    with open(args.destination, "w") as outf:
+        first_line = inf.readline()
+        if first_line.startswith("#!"):
+            print("#!", sys.executable, file=outf)
+        else:
+            print("#!", sys.executable, file=outf)
+            outf.write(first_line)
+        for line in inf:
+            outf.write(line)
+
+shutil.copymode(args.source, args.destination)