title: An equivalent to string.ascii_letters for unicode strings in python 2.x?
body: <p>In the "string" module of the standard library,  </p>
  
  <pre><code>string.ascii_letters ## Same as string.ascii_lowercase + string.ascii_uppercase
  </code></pre>
  
  <p>is</p>
  
  <pre><code>'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
  </code></pre>
  
  <p>Is there a similar constant which would include everything that is considered a letter in unicode?</p>