Use new common tools in Python scripts

tools/fix_pythonpath.py

Index: tools/fix_pythonpath.py
diff --git a/tools/fix_pythonpath.py b/tools/fix_pythonpath.py
new file mode 100644
index 0000000000000000000000000000000000000000..196aa878c4f036304d476647a07246a5330f6740
--- /dev/null
+++ b/tools/fix_pythonpath.py
@@ -0,0 +1,20 @@
+#!/usr/bin/env python

[borenet, 2014/06/23 20:06:30]

For convenience.

+# Copyright (c) 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+
+"""Adjust the PYTHONPATH appropriately."""

[rmistry, 2014/06/24 18:31:05]

What you are doing here is including the root checkout directory in the
pythonpath to hopefully make it convenience for modules to import other modules.
Can you specify something like that here, the current pydoc is not very clear.

[borenet, 2014/06/24 19:17:31]

Adjusted the wording but did not specify that the root dir is what's added,
since we may add more.

+
+
+import os
+import sys
+
+
+CHECKOUT_ROOT = os.path.realpath(os.path.join(
+    os.path.dirname(os.path.abspath(__file__)), os.pardir))
+sys.path.insert(0, CHECKOUT_ROOT)
+
+
+if __name__ == '__main__':
+  print 'PYTHONPATH=%s' % ':'.join(sys.path)

[rmistry, 2014/06/24 18:31:05]

I am not clear about how this module will be used. Will it be imported by files
and get the checkout root added automatically or will something rely on the
above printed line to do anything.

[borenet, 2014/06/24 19:17:31]

I expect that scripts will import it.  I added the print just so that if you ran
the file directly it would show what its result would have been.