Index: pylib/mozautomation/mozautomation/commitparser.py
===================================================================
--- pylib/mozautomation/mozautomation/commitparser.py
+++ pylib/mozautomation/mozautomation/commitparser.py
@@ -1,10 +1,13 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-# This module contains utilities for parsing commit messages.
+"""
+This module contains utilities for parsing commit messages.
+"""
+
 
 import cgi
 import re
 
 # These regular expressions are not very robust. Specifically, they fail to
Index: pylib/mozautomation/mozautomation/treestatus.py
===================================================================
--- pylib/mozautomation/mozautomation/treestatus.py
+++ pylib/mozautomation/mozautomation/treestatus.py
@@ -1,9 +1,14 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
+"""
+Classes for interacting with the treestatus web service.
+"""
+
+
 from __future__ import unicode_literals
 
 import json
 import urllib2