title: Example for accessing Tcl functions from Python
body: <p><a href="http://wiki.python.org/moin/elmer" rel="noreferrer">elmer</a> enables one to run Python code from Tcl. What about the other way around? Could anyone give an example in Python?</p>
  
  <p><strong>Update</strong>: by this I mean, being able to access Tcl objects, invoke Tcl functions, etc. instead of <em>simply running</em> some Tcl code.</p>