title: Converting an un-aware timestamp into an aware timestamp for UTC conversion
body: <p>I created a datetime that is unaware using the code below and I need to have it in UTC since the time is in "US/Eastern". I would like to make the datetime aware of EST first then convert to UTC.</p>
  
  <pre><code>import datetime
  import pytz
  from pytz import timezone
  dt = "8/8/2013 4:05:03 PM"
  dt = datetime.datetime.strptime(dt,"%m/%d/%Y %I:%M:%S %p")
  unaware_est = dt.strftime("%Y-%m-%dT%H:%M:%S")
  localtz = timezone('US/Eastern')
  utc = localtz.localize(unaware_est)
  </code></pre>
  
  <p>Error Message:</p>
  
  <pre><code>Traceback (most recent call last):
    File "/home/ubuntu/workspace/druidry-codebase/services/xignite/test.py", line 120, in &lt;module&gt;
      quote_time = localtz.localize(quote_time)
    File "/usr/local/lib/python2.7/dist-packages/pytz-2013b-py2.7.egg/pytz/tzinfo.py", line 303, in localize
      if dt.tzinfo is not None:
  AttributeError: 'str' object has no attribute 'tzinfo'
  </code></pre>