Adding py sample for google analytics core reporting api

samples/analytics/hello_analytics_api_v3.py

 #!/usr/bin/python
 # -*- coding: utf-8 -*-
 #
 # Copyright 2012 Google Inc. All Rights Reserved.
 #
 # 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.
 
 """Simple intro to using the Google Analytics API v3.
 
 This application demonstrates how to use the python client library to access
 Google Analytics data. The sample traverses the Management API to obtain the
-authorized users first profile ID. Then the sample uses this ID to
+authorized user's first profile ID. Then the sample uses this ID to
 contstruct a Core Reporting API query to return the top 25 organic search
 terms.
 
 Before you begin, you must sigup for a new project in the Google APIs console:
 https://code.google.com/apis/console
 
-The register the project to use OAuth2.0 for installed applications.
+Then register the project to use OAuth2.0 for installed applications.
 
 Finally you will need to add the client id, client secret, and redirect URL
-into the client_secrest.json file that is in the same directory as this sample.
+into the client_secrets.json file that is in the same directory as this sample.
 
 Sample Usage:
 
   $ python hello_analytics_api_v3.py
 
 Also you can also get help on all the command-line flags the program
 understands by running:
 
   $ python hello_analytics_api_v3.py --help
 """
@@ skipping 107 matching lines @@
     results: The response returned from the Core Reporting API.
   """
 
   print
   print 'Profile Name: %s' % results.get('profileInfo').get('profileName')
   print
 
   # Print header.
   output = []
   for header in results.get('columnHeaders'):
-    output.append(header.get('name'))
+    output.append('%30s' % header.get('name'))
   print ''.join(output)
 
   # Print data table.
-  if results.get('rows'):
+  if results.get('rows', []):
     for row in results.get('rows'):
       output = []
       for cell in row:
         output.append('%30s' % cell)
       print ''.join(output)
 
   else:
     print 'No Rows Found'
 
 
 if __name__ == '__main__':
   main(sys.argv)