Use .py suffix for python scripts, we're following chromium.

script/update-node.py

@@ -0,0 +1,79 @@
+#!/usr/bin/env python
+
+import argparse
+import errno
+import subprocess
+import sys
+import os
+
+from lib.util import *
+
+
+SOURCE_ROOT = os.path.dirname(os.path.dirname(__file__))
+NODE_VERSION = 'v0.10.9'
+NODE_DIST_URL = 'https://gh-contractor-zcbenz.s3.amazonaws.com/node/dist'
+IS_POSIX = (sys.platform != 'win32') and (sys.platform != 'cygwin')
+
+
+def main():
+  os.chdir(SOURCE_ROOT)
+
+  args = parse_args()
+  if not node_needs_update(args.version):
+    return 0
+
+  url, filename = get_node_url(args.url, args.version)
+  directory = download('Download node', url, filename)
+
+  if IS_POSIX:
+    root_name = 'node-{0}-{1}-x86'.format(args.version, sys.platform)
+    member = os.path.join(root_name, 'bin', 'node')
+    extract_tarball(os.path.join(directory, filename), member, directory)
+    node_path = os.path.join(directory, member)
+
+  copy_node(node_path)
+
+
+def parse_args():
+  parser = argparse.ArgumentParser(description='Update node binary')
+  parser.add_argument('--version',
+                      help='Version of node',
+                      default=NODE_VERSION,
+                      required=False)
+  parser.add_argument('--url',
+                      help='URL to download node',
+                      default=NODE_DIST_URL,
+                      required=False)
+  return parser.parse_args()
+
+
+def node_needs_update(target_version):
+  try:
+    node = os.path.join('node', 'node')
+    if not IS_POSIX:
+      node += '.exe'
+    version = subprocess.check_output([node, '--version'])
+    return version.strip() != target_version
+  except OSError as e:
+    if e.errno != errno.ENOENT:
+      raise
+    return True
+
+
+def get_node_url(base_url, target_version):
+  if IS_POSIX:
+    distname = 'node-{0}-{1}-x86.tar.gz'.format(target_version, sys.platform)
+  else:
+    distname = 'node-{0}.exe'.format(target_version)
+  return '{0}/{1}'.format(base_url, distname), distname
+
+
+def copy_node(node_path):
+  safe_mkdir('node')
+  node = os.path.join('node', 'node')
+  safe_unlink(node)
+  os.rename(node_path, node)
+
+
+if __name__ == '__main__':
+  sys.exit(main())