title: python csv module error
body: <p>When I use Pythons <a href="https://docs.python.org/2/library/csv.html" rel="noreferrer"><code>csv</code></a> module, it shows me </p>
  
  <pre><code>"delimiter" must be an 1-character string"
  </code></pre>
  
  <p>My code is  like this</p>
  
  <pre><code> sep = ","
   srcdata = cStringIO.StringIO(wdata[1])
   data = csv.reader(srcdata, delimiter=sep)
  </code></pre>
  
  <p><code>wdata[1]</code> is a string source.</p>
  
  <p>How do I fix this problem?</p>