1 files changed, 18 insertions, 0 deletions
diff --git a/mojo/public/tools/bindings/pylib/mojom/fileutil.py b/mojo/public/tools/bindings/pylib/mojom/fileutil.py
new file mode 100644
index 0000000000..b321e9f543
--- /dev/null
+++ b/mojo/public/tools/bindings/pylib/mojom/fileutil.py
@@ -0,0 +1,18 @@
+# Copyright 2015 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.
+
+import errno
+import os.path
+
+def EnsureDirectoryExists(path, always_try_to_create=False):
+  """A wrapper for os.makedirs that does not error if the directory already
+  exists. A different process could be racing to create this directory."""
+
+  if not os.path.exists(path) or always_try_to_create:
+    try:
+      os.makedirs(path)
+    except OSError as e:
+      # There may have been a race to create this directory.
+      if e.errno != errno.EEXIST:
+        raise