title: Making some detail explanations in python string
body: <p>With Java, I can split the string and give some detailed explanations</p>
  
  <pre><code>String x = "a" + // First
             "b" + // Second
         "c";  // Third
  
  // x = "abc"
  </code></pre>
  
  <p>How can I make the equivalence in python?</p>
  
  <p>I could split the string, but I can't make a comment on this like I do with Java. </p>
  
  <pre><code>x = "a" \
  "b" \
  "c"
  </code></pre>
  
  <p>I need this feature for explaining regular expression usage.</p>
  
  <pre><code>Pattern p = Pattern.compile("rename_method\\(" + // ignore 'rename_method('
                          "\"([^\"]*)\"," +    // find '"....",' 
  </code></pre>