Make blink_trybot recipe work on windows

scripts/slave/recipe_modules/python/api.py

Index: scripts/slave/recipe_modules/python/api.py
diff --git a/scripts/slave/recipe_modules/python/api.py b/scripts/slave/recipe_modules/python/api.py
new file mode 100644
index 0000000000000000000000000000000000000000..40e3e1ddaa1407b368eca668d4eace63a28dad0b
--- /dev/null
+++ b/scripts/slave/recipe_modules/python/api.py
@@ -0,0 +1,17 @@
+# Copyright 2013 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.
+
+from slave import recipe_api
+
+class PythonApi(recipe_api.RecipeApi):
+  def __call__(self, name, script, args=None, unbuffered=True, **kwargs):
+    """Return a step to run a python script with arguments."""
+    preamble = ['python']

[agable, 2013/06/25 15:55:28]

call it 'cmd' or something -- it eventually holds ['python', '-u', 'foo.py']
which is pretty much the main body, not a preamble.

[iannucci, 2013/06/25 21:22:09]

Done.

+    if unbuffered:
+      preamble.append('-u')
+    preamble.append(script)
+    return self.m.step(name, preamble + list(args or []), **kwargs)
+
+  def inline(self, name, program, **kwargs):

[agable, 2013/06/25 15:55:28]

docstring

[iannucci, 2013/06/25 21:22:09]

Good catch. Done.

+    return self(name, recipe_api.InputDataPlaceholder(program, '.py'), **kwargs)