Make hash-bangs more portable am: c2ef2c669a am: ffbbde9b82 am: a228acc7b7 am: 901937582d

Original change: https://android-review.googlesource.com/c/platform/prebuilts/checkstyle/+/1873796

Change-Id: Ibc528ccaa0a3f063d0825ffde3c8b0c11ce9380a
diff --git a/checkstyle.py b/checkstyle.py
index 2039abb..be3b7f0 100755
--- a/checkstyle.py
+++ b/checkstyle.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 
 #
 # Copyright 2015, The Android Open Source Project
diff --git a/tests.py b/tests.py
index 7c9c7e4..75f66c8 100755
--- a/tests.py
+++ b/tests.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 
 #
 # Copyright 2015, The Android Open Source Project