title: KeyError: 'filename' while linking python and html using karrigell
body: <p>I'm trying to read an uploaded file using python 2.7 and Karrigell. But it is showing me:</p>
  
  <pre><code>Traceback (most recent call last):
    File "C:\Karrigell-3.1.1\karrigell\core\HTTP.py", line 333, in process_request
    File "C:\Karrigell-3.1.1\karrigell\core\k_target.py", line 399, in run
    File "", line 7, in 
    File "cgi.pyc", line 541, in __getitem__
  KeyError: 'filename'
  </code></pre>
  
  <p>Here is my web_access.py:</p>
  
  <pre><code>import cgi, os
  
  form = cgi.FieldStorage()
  fileitem=form['filename']
  if fileitem.file:
      print fileitem.file.read()
  
  else:
      print "Error"
  </code></pre>
  
  <p>My Html page:</p>
  
  <pre><code>&lt;section&gt;
      Enter the text: 
      &lt;form action="web_access.py" method="post" enctype="multipart/form-data"&gt;
          &lt;input type="file" name="filename" id="file" value="" size="50"/&gt;
          &lt;br /&gt;
          &lt;input type="submit" value="Analyze"/&gt;
      &lt;/form&gt;
  &lt;/section&gt;
  </code></pre>
  
  <p>Help me out please!</p>