title: how timestamp to datetime by python？
body: <p>Demo：</p>
  
  <pre><code>import time
  timeStamp = 1381419600
  timeArray = time.localtime(timeStamp)
  otherStyleTime = time.strftime("%Y-%m-%d %H:%M:%S", timeArray)
  
  otherStyletime == "2013-10-10 23:40:00"
  </code></pre>
  
  <p>but my timestamp is 1399266718207, have valueerror , timestamp out of range for platform time_t. please tell me what can i do? change the size of date?</p>