http://code.activestate.com/recipes/tags/nodevisitor/popular/2009-02-28T20:13:15-08:00ActiveState Code Recipes2009-02-28T20:13:15-08:00Jervis Whitleyhttp://code.activestate.com/recipes/users/4169341/http://code.activestate.com/recipes/576671-parse-call-function-for-py26-and-py27/

<p style="color: grey"> Python recipe 576671 by <a href="/recipes/users/4169341/">Jervis Whitley</a> (<a href="/recipes/tags/ast/">ast</a>, <a href="/recipes/tags/call/">call</a>, <a href="/recipes/tags/function/">function</a>, <a href="/recipes/tags/namedtuple/">namedtuple</a>, <a href="/recipes/tags/nodevisitor/">nodevisitor</a>, <a href="/recipes/tags/parsing/">parsing</a>). Revision 14. </p> <p>In some cases it may be desirable to parse the string expression "f1(*args)" and return some of the key features of the represented function-like call. </p> <p>This recipe returns the key features in the form of a namedtuple. </p> <p>e.g. (for the above)</p> <pre class="prettyprint"><code>&gt;&gt;&gt; explain("f1(*args)") [ Call(func='f1', starargs='args') ] </code></pre> <p>The recipe will return a list of such namedtuples for <code>"f1(*args)\nf2(*args)"</code> Note that while the passed string expression must evaluate to valid python syntax, names needn't be declared in current scope.</p>