title: Python arrow package time zone error?
body: <p>I'm running the following code in python 2.7 in Windows 7 and am getting an error:</p>
  
  <pre><code>import arrow
  
  timeNow = arrow.utcnow()
  print timeNow
  timePST = timeNow.to('US/Pacific')
  timeMST = timeNow.to('US/Mountain')
  </code></pre>
  
  <p>ERROR:</p>
  
  <pre><code>Traceback (most recent call last):
    File "C:\Users\flann\Dropbox\Personal\GoogleTrendsFutures\pythonCode\testBug.py", line 5, in &lt;module&gt;
      timePST = timeNow.to('US/Pacific')
    File "C:\Python27\lib\site-packages\arrow\arrow.py", line 456, in to
      tz = parser.TzinfoParser.parse(tz)
    File "C:\Python27\lib\site-packages\arrow\parser.py", line 295, in parse
      tzinfo = tz.gettz(string)
    File "C:\Python27\lib\site-packages\dateutil\tz.py", line 963, in gettz
      tz = tzwin(name)
    File "C:\Python27\lib\site-packages\dateutil\tzwin.py", line 84, in __init__
      tzkey = winreg.OpenKey(handle, "%s\%s" % (TZKEYNAME, name))
  WindowsError: [Error 2] The system cannot find the file specified
  </code></pre>
  
  <p>What is strange is that the code is working perfectly on my other windows machine. I have a feeling that the error is an malconfigured time zone registry, but I've tried:
  <a href="http://support.microsoft.com/KB/2863058" rel="nofollow">http://support.microsoft.com/KB/2863058</a> This never returns</p>
  
  <p>Any help would be much appreciated!</p>