convert shebang lines: python -> python3
diff --git a/Tools/scripts/fixdiv.py b/Tools/scripts/fixdiv.py
index 8b15cc6..4ecbea1 100755
--- a/Tools/scripts/fixdiv.py
+++ b/Tools/scripts/fixdiv.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 """fixdiv - tool to fix division operators.