title: installing pytz in gae is giving UnknownTimeZoneError
body: <p><a href="https://stackoverflow.com/users/190597/unutbu">unutbu</a> answered my previous question nicely <a href="https://stackoverflow.com/questions/11925664/what-is-the-local-timezone">here 2</a>, but there does not appear to be a pytz to import directly using my SDK. So I went looking for alternatives and found, for example <a href="https://stackoverflow.com/questions/10843148/importerror-using-pytz-in-google-app-engine">this answer</a> which recommends downloading from <a href="http://pypi.python.org/pypi/gaepytz" rel="nofollow noreferrer">here 4</a>.</p>
  
  <p>I placed the following code in my local interactive console.</p>
  
  <pre><code>import datetime as dt
  import pytz
  
  utc = pytz.utc
  western = pytz.timezone('US/Pacific')
  </code></pre>
  
  <p>I put the downloaded directory <code>pytz</code> in my local root directory <code>scheduler</code> and I unzipped the included file <code>scheduler/pytz/zoneinfo.zip</code> and got the following error in the interactive console. I did NOT adjust <code>app.yaml</code> at all; is that correct?</p>
  
  <pre><code>"/Users/brian/googleapps/scheduler/pytz/__init__.py", line 173, in timezone
      raise UnknownTimeZoneError(zone)
  UnknownTimeZoneError: 'US/Pacific'
  </code></pre>
  
  <p>I also found an answer to a similar error <a href="https://stackoverflow.com/questions/1718724/how-to-properly-add-pytz-to-a-google-app-engine-application">here 5</a> which recommends a patch to the <strong>init</strong>.py file.  </p>
  
  <p>Now I have found an answer <a href="https://stackoverflow.com/questions/1718724/how-to-properly-add-pytz-to-a-google-app-engine-application">here 6</a> which suggests that errors occur if VERSION 2010h is used instead of VERSION 2011h and the pytz I downloaded is 2010h. What is UP?</p>
  
  <p>Is there an easy way to be able to use Wooble's answer with pytz. And does his answer imply I have to upload the <code>pytz</code> directory with my gae app when it is deployed or is there a pytz alread there?</p>