Cleaned up OAuth 2.0 support fully using Storage() and updating samples.
diff --git a/samples/django_sample/manage.py b/samples/django_sample/manage.py
index bcdd55e..0b932da 100755
--- a/samples/django_sample/manage.py
+++ b/samples/django_sample/manage.py
@@ -4,7 +4,11 @@
     import settings # Assumed to be in the same directory.
 except ImportError:
     import sys
-    sys.stderr.write("Error: Can't find the file 'settings.py' in the directory containing %r. It appears you've customized things.\nYou'll have to run django-admin.py, passing it your settings module.\n(If the file settings.py does indeed exist, it's causing an ImportError somehow.)\n" % __file__)
+    sys.stderr.write("""Error: Can't find the file 'settings.py' in the
+directory containing %r. It appears you've customized things. You'll
+have to run django-admin.py, passing it your settings module.
+(If the file settings.py does indeed exist, it's causing an ImportError
+somehow.)\n""" % __file__)
     sys.exit(1)
 
 if __name__ == "__main__":
diff --git a/samples/oauth2/appengine/main.py b/samples/oauth2/appengine/main.py
index 981e392..78634e7 100644
--- a/samples/oauth2/appengine/main.py
+++ b/samples/oauth2/appengine/main.py
@@ -45,7 +45,8 @@
   @login_required
   def get(self):
     user = users.get_current_user()
-    credentials = StorageByKeyName(Credentials, user.user_id(), 'credentials').get()
+    credentials = StorageByKeyName(
+        Credentials, user.user_id(), 'credentials').get()
 
     if credentials:
       http = httplib2.Http()
@@ -87,7 +88,8 @@
     flow = pickle.loads(memcache.get(user.user_id()))
     if flow:
       credentials = flow.step2_exchange(self.request.params)
-      StorageByKeyName(Credentials, user.user_id(), 'credentials').put(credentials)
+      StorageByKeyName(
+          Credentials, user.user_id(), 'credentials').put(credentials)
       self.redirect("/")
     else:
       pass
diff --git a/samples/oauth2/buzz/buzz.py b/samples/oauth2/buzz/buzz.py
index 7df6c72..fe30a32 100644
--- a/samples/oauth2/buzz/buzz.py
+++ b/samples/oauth2/buzz/buzz.py
@@ -11,28 +11,43 @@
 
 __author__ = 'jcgregorio@google.com (Joe Gregorio)'
 
-from apiclient.discovery import build
-from oauth2client.file import Storage
-
 import httplib2
 import pickle
 import pprint
 
+from apiclient.discovery import build
+from oauth2client.file import Storage
+from oauth2client.client import OAuth2WebServerFlow
+from oauth2client.tools import run
+
 # Uncomment the next line to get very detailed logging
 #httplib2.debuglevel = 4
 
 
 def main():
-  credentials = Storage('buzz.dat').get()
+  storage = Storage('buzz.dat')
+  credentials = storage.get()
+  if not credentials:
+    flow = OAuth2WebServerFlow(
+        client_id='433807057907.apps.googleusercontent.com',
+        client_secret='jigtZpMApkRxncxikFpR+SFg',
+        scope='https://www.googleapis.com/auth/buzz',
+        user_agent='buzz-cmdline-sample/1.0',
+        domain='anonymous',
+        xoauth_displayname='Buzz Client Example App'
+        )
+    credentials = run(flow, storage)
 
   http = httplib2.Http()
   http = credentials.authorize(http)
 
-  p = build("buzz", "v1", http=http, developerKey="AIzaSyDRRpR3GS1F1_jKNNM9HCNd2wJQyPG3oN0")
+  p = build("buzz", "v1", http=http,
+            developerKey="AIzaSyDRRpR3GS1F1_jKNNM9HCNd2wJQyPG3oN0")
   activities = p.activities()
 
   # Retrieve the first two activities
-  activitylist = activities.list(max_results='2', scope='@self', userId='@me').execute()
+  activitylist = activities.list(
+      max_results='2', scope='@self', userId='@me').execute()
   print "Retrieved the first two activities"
 
   # Retrieve the next two activities
@@ -45,14 +60,16 @@
       "data": {
           'title': 'Testing insert',
           'object': {
-              'content': u'Just a short note to show that insert is working. ☄',
+              'content':
+                u'Just a short note to show that insert is working. ☄',
               'type': 'note'}
           }
       }
   activity = activities.insert(userId='@me', body=new_activity_body).execute()
   print "Added a new activity"
 
-  activitylist = activities.list(max_results='2', scope='@self', userId='@me').execute()
+  activitylist = activities.list(
+      max_results='2', scope='@self', userId='@me').execute()
 
   # Add a comment to that activity
   comment_body = {
diff --git a/samples/oauth2/buzz/web_server_dance.py b/samples/oauth2/buzz/web_server_dance.py
deleted file mode 100644
index d0e1f6f..0000000
--- a/samples/oauth2/buzz/web_server_dance.py
+++ /dev/null
@@ -1,37 +0,0 @@
-# Copyright (C) 2010 Google Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""Do the OAuth 2.0 Web Server dance.
-
-Do the OAuth 2.0 Web Server dance for
-a command line application. Store the generated
-credentials in a common file that is used by
-other example apps in the same directory.
-"""
-
-__author__ = 'jcgregorio@google.com (Joe Gregorio)'
-
-from oauth2client.client import OAuth2WebServerFlow
-from oauth2client.tools import run
-
-flow = OAuth2WebServerFlow(
-    client_id='433807057907.apps.googleusercontent.com',
-    client_secret='jigtZpMApkRxncxikFpR+SFg',
-    scope='https://www.googleapis.com/auth/buzz',
-    user_agent='buzz-cmdline-sample/1.0',
-    domain='anonymous',
-    xoauth_displayname='Buzz Client Example App'
-    )
-
-run(flow, 'buzz.dat')
diff --git a/samples/oauth2/latitude/latitude.py b/samples/oauth2/latitude/latitude.py
new file mode 100644
index 0000000..fc312dd
--- /dev/null
+++ b/samples/oauth2/latitude/latitude.py
@@ -0,0 +1,56 @@
+#!/usr/bin/python2.4
+# -*- coding: utf-8 -*-
+#
+# Copyright 2010 Google Inc. All Rights Reserved.
+
+"""Simple command-line example for Latitude.
+
+Command-line application that sets the users
+current location.
+"""
+
+__author__ = 'jcgregorio@google.com (Joe Gregorio)'
+
+import httplib2
+
+from apiclient.discovery import build
+from oauth2client.file import Storage
+from oauth2client.client import OAuth2WebServerFlow
+from oauth2client.tools import run
+
+# Uncomment to get detailed logging
+#httplib2.debuglevel = 4
+
+
+def main():
+  storage = Storage('latitude.dat')
+  credentials = storage.get()
+
+  if not credentials:
+    flow = OAuth2WebServerFlow(
+        client_id='433807057907.apps.googleusercontent.com',
+        client_secret='jigtZpMApkRxncxikFpR+SFg',
+        scope='https://www.googleapis.com/auth/latitude',
+        user_agent='latitude-cmdline-sample/1.0',
+        xoauth_displayname='Latitude Client Example App')
+
+    credentials = run(flow, storage)
+
+  http = httplib2.Http()
+  http = credentials.authorize(http)
+
+  p = build("latitude", "v1", http=http)
+
+  body = {
+      "data": {
+          "kind": "latitude#location",
+          "latitude": 37.420352,
+          "longitude": -122.083389,
+          "accuracy": 130,
+          "altitude": 35
+          }
+      }
+  print p.currentLocation().insert(body=body).execute()
+
+if __name__ == '__main__':
+  main()
diff --git a/samples/oauth2/moderator/moderator.py b/samples/oauth2/moderator/moderator.py
index 9a3dbb2..5a6e2b8 100644
--- a/samples/oauth2/moderator/moderator.py
+++ b/samples/oauth2/moderator/moderator.py
@@ -11,22 +11,30 @@
 
 __author__ = 'jcgregorio@google.com (Joe Gregorio)'
 
+import httplib2
 
 from apiclient.discovery import build
 from oauth2client.file import Storage
-
-import httplib2
+from oauth2client.client import OAuth2WebServerFlow
+from oauth2client.tools import run
 
 # Uncomment to get low level HTTP logging
 #httplib2.debuglevel = 4
 
-# Uncomment to get logging
-#import logging
-#logging.basicConfig(level=logging.DEBUG)
-
 
 def main():
-  credentials = Storage('moderator.dat').get()
+  storage = Storage('moderator.dat')
+  credentials = storage.get()
+
+  if not credentials:
+    flow = OAuth2WebServerFlow(
+        client_id='433807057907.apps.googleusercontent.com',
+        client_secret='jigtZpMApkRxncxikFpR+SFg',
+        scope='https://www.googleapis.com/auth/moderator',
+        user_agent='moderator-cmdline-sample/1.0',
+        xoauth_displayname='Moderator Client Example App')
+
+    credentials = run(flow, storage)
 
   http = httplib2.Http()
   http = credentials.authorize(http)
diff --git a/samples/oauth2/moderator/web_server_dance.py b/samples/oauth2/moderator/web_server_dance.py
deleted file mode 100644
index b3b9d35..0000000
--- a/samples/oauth2/moderator/web_server_dance.py
+++ /dev/null
@@ -1,35 +0,0 @@
-# Copyright (C) 2010 Google Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-"""Do the OAuth 2.0 Web Server dance.
-
-Do the OAuth 2.0 Web Server dance for
-a command line application. Store the generated
-credentials in a common file that is used by
-other example apps in the same directory.
-"""
-
-__author__ = 'jcgregorio@google.com (Joe Gregorio)'
-
-from oauth2client.client import OAuth2WebServerFlow
-from oauth2client.tools import run
-
-flow = OAuth2WebServerFlow(
-    client_id='433807057907.apps.googleusercontent.com',
-    client_secret='jigtZpMApkRxncxikFpR+SFg',
-    scope='https://www.googleapis.com/auth/moderator',
-    user_agent='moderator-cmdline-sample/1.0',
-    xoauth_displayname='Moderator Client Example App')
-
-run(flow, 'moderator.dat')
diff --git a/samples/oauth2/urlshortener/main.py b/samples/oauth2/urlshortener/main.py
new file mode 100644
index 0000000..f995f38
--- /dev/null
+++ b/samples/oauth2/urlshortener/main.py
@@ -0,0 +1,59 @@
+#!/usr/bin/python2.4
+# -*- coding: utf-8 -*-
+#
+# Copyright 2010 Google Inc. All Rights Reserved.
+
+"""Simple command-line example for Google URL Shortener API.
+
+Command-line application that shortens a URL.
+"""
+
+__author__ = 'jcgregorio@google.com (Joe Gregorio)'
+
+import httplib2
+import pprint
+
+from apiclient.discovery import build
+from oauth2client.file import Storage
+from oauth2client.client import OAuth2WebServerFlow
+from oauth2client.tools import run
+
+# Uncomment to get detailed logging
+#httplib2.debuglevel = 4
+
+
+def main():
+  storage = Storage('urlshortener.dat')
+  credentials = storage.get()
+
+  if not credentials:
+    flow = OAuth2WebServerFlow(
+        client_id='433807057907.apps.googleusercontent.com',
+        client_secret='jigtZpMApkRxncxikFpR+SFg',
+        scope='https://www.googleapis.com/auth/urlshortener',
+        user_agent='urlshortener-cmdline-sample/1.0',
+        xoauth_displayname='URL Shortener Client Example App')
+
+    credentials = run(flow, storage)
+
+  http = httplib2.Http()
+  http = credentials.authorize(http)
+
+  # Build the url shortener service
+  service = build("urlshortener", "v1", http=http,
+            developerKey="AIzaSyDRRpR3GS1F1_jKNNM9HCNd2wJQyPG3oN0")
+  url = service.url()
+
+  # Create a shortened URL by inserting the URL into the url collection.
+  body = {"longUrl": "http://code.google.com/apis/urlshortener/" }
+  resp = url.insert(body=body).execute()
+  pprint.pprint(resp)
+
+  shortUrl = resp['id']
+
+  # Convert the shortened URL back into a long URL
+  resp = url.get(shortUrl=shortUrl).execute()
+  pprint.pprint(resp)
+
+if __name__ == '__main__':
+  main()