title: os.path.exists()- passing variables fron another script
body: <p>I am using one script which includes this:</p>
  
  <pre><code>if not os.path.exists(copy):
      print "Wrong path-directory name"
  </code></pre>
  
  <p>I have an other which includes all the variables:</p>
  
  <pre><code>copy = /users/.../.... e.t.c.
  </code></pre>
  
  <p>When i call the second one through the first one i am taking all the desired results except this with the wrong path. the message is:</p>
  
  <pre><code>if not os.path.exists(copy):
  NameError: name 'copy' is not defined.
  </code></pre>
  
  <p>Why my script cannot recognize the copy path when it is inside the os.path module? What should I modify?</p>