Example of very simple multiple dispatch in python

simpleexample.py

class Visitor:

    def visit(self, node):
        "Dispatcher function, dispatching tree type T to method _T."
        meth = getattr(self, "_"+node.__class__.__name__)
        meth(node)

    def _Scope(self, node):
        print "Scope"

    def _GlobalScope(self, node):
        self._Scope(node)

    def _Statement(self, node):
        print "Statement"