title: AttributeError: 'module' object has no attribute 'ZKLib'
body: <p>I'm trying to connect to biometric device. I have installed 'Zklib' using (Pip). My code as follows</p>
  
  <pre><code>`import sys
   import zklib
   import time
   from zklib import zkconst
   zk = zklib.ZKLib("192.168.0.188", 4370)
   ret = zk.connect()
   print "connection:", ret`
  </code></pre>
  
  <p>When I execute this, I get an error</p>
  
  <pre><code>AttributeError: 'module' object has no attribute 'ZKLib'
  </code></pre>
  
  <p>Help me to run this code successfully.</p>