Fix spelling of the word occurrence

appengine/chromium_try_flakes/handlers/index.py

 # Copyright 2014 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 google.appengine.datastore.datastore_query import Cursor
 from google.appengine.ext import ndb
 from google.appengine.ext.webapp import template
 
 from model.flake import Flake
 from status.cq_status import is_last_hour
@@ skipping 23 matching lines @@
   patchsets = ndb.get_multi(patchsets_keys)
 
   filtered_occurrences = []
   for index, r in enumerate(failure_runs):
     if filter_function(r.time_finished):
       r.patchset_url = patchsets[index].getURL()
       r.builder = patchsets[index].builder
       r.formatted_time = time_formatter(r.time_finished)
       filtered_occurrences.append(r)
 
-  # Do simple sorting of occurances by builder to make reading easier.
+  # Do simple sorting of occurrences by builder to make reading easier.
   return sorted(filtered_occurrences, key=FlakeSortFunction)
 
 
 class Index(webapp2.RequestHandler):  # pragma: no cover
   def get(self):
     time_range = self.request.get('range', default_value='day')
     cursor = Cursor(urlsafe=self.request.get('cursor'))
     flakes_query = Flake.query()
     if time_range == 'hour':
       flakes_query = flakes_query.filter(Flake.last_hour == True)
@@ skipping 41 matching lines @@
       f.filtered_occurrences = GetFilteredOccurences(
           f, time_formatter, filter_by_range)
 
     values = {
       'range': time_range,
       'flakes': flakes,
       'more': more,
       'cursor': next_cursor.urlsafe() if next_cursor else '',
     }
     self.response.write(template.render('templates/index.html', values))