http://code.activestate.com/recipes/users/4178042/2011-05-20T13:46:48-07:00ActiveState Code Recipes2011-05-20T13:46:48-07:00Stefan Tunschhttp://code.activestate.com/recipes/users/4178042/http://code.activestate.com/recipes/577709-recursive-functional-state-machine/

<p style="color: grey"> Python recipe 577709 by <a href="/recipes/users/4178042/">Stefan Tunsch</a> (<a href="/recipes/tags/functional/">functional</a>, <a href="/recipes/tags/recursion/">recursion</a>, <a href="/recipes/tags/state_machine/">state_machine</a>). </p> <p>This is a simple state machine that takes a functional approach. It requires trampoline from pysistence.func to avoid the recursion limit.</p> <p>Namedtuples are used to define the different states. globals() is used to reference the states. (This could also be done putting states into a separate module and getting them through getattr.)</p> <p>In this recipe the functions called in the different states need to return a boolean, which defines the success or failure event.</p>