ent signature for your def, they are
required to follow normal Python conventions (i.e., all
arguments are required except keyword arguments with a default
value). This is in contrast to using context-level variables,
which evaluate to <code class="docutils literal notranslate"><span class="pre">UNDEFINED</span></code> if you reference a name that
does not exist.</p>
<div class="section" id="calling-defs-from-other-files">
<h3>Calling Defs from Other Files<a class="headerlink" href="#calling-defs-from-other