do not use unversioned Python binary

We said 'bye' to Python 2 already. So let us use Python 3 for all
scripts.

Unversioned Python binary should be avoided as it may be Python2 or
Python3 (depends on distribution).

Implements: blueprint drop-py2-support

Change-Id: Ifd7912a3debf3ee4ddd8f3e1a4c5870848d4d688

3 files changed, 3 insertions, 3 deletions

diff --git a/tools/validate-all-file.py b/tools/validate-all-file.py
index e44641291..c04fb4000 100755
--- a/tools/validate-all-file.py
+++ b/tools/validate-all-file.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/tools/validate-yaml.py b/tools/validate-yaml.py
index 6df84ff07..400a3821b 100755
--- a/tools/validate-yaml.py
+++ b/tools/validate-yaml.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/tools/version-check.py b/tools/version-check.py
index 7f4204439..522ef1a31 100755
--- a/tools/version-check.py
+++ b/tools/version-check.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.