title: How to put string in a set as an individual item?
body: <p>I have a string </p>
  
  <pre><code>sample = "http://www.stackoverflow.com"
  </code></pre>
  
  <p>I want convert this string to a set</p>
  
  <pre><code>final = {"http://www.stackoverflow.com"}
  </code></pre>
  
  <p>I tried the following code:</p>
  
  <pre><code>final = set(sample)
  </code></pre>
  
  <p>But i got the wrong out as</p>
  
  <pre><code>{u'.', u'/', u':', u'a', u'b', u'c', u'e', u'h', u'i', u'k', u'l', u'n', u'p', u's', u't', u'w'}
  </code></pre>
  
  <p>I also used </p>
  
  <pre><code>final  = ast.literal_eval(Sample)
  </code></pre>
  
  <p>and I got this </p>
  
  <pre><code>SyntaxError: invalid syntax
  </code></pre>
  
  <p>Is there any other solution for this</p>