title: Parse a tuple from a string?
body: <p>Say I have a string that's of the same form a tuple should be, for example, <code>"(1,2,3,4,5)"</code>. What's the easiest way to convert that into an actual tuple? An example of what I want to do is:</p>
  
  <pre><code>tup_string = "(1,2,3,4,5)"
  tup = make_tuple(tup_string)
  </code></pre>
  
  <p>Just running <code>tuple()</code> on the string make the whole thing one big tuple, whereas what I'd like to do is comprehend the string as a tuple. I know I can use a regex for this, but I was hoping there's a less costly way. Ideas?</p>