http://code.activestate.com/recipes/tags/functions-function-introspection/2017-04-20T23:34:50-07:00ActiveState Code Recipes2017-04-20T23:34:50-07:00Vasudev Ramhttp://code.activestate.com/recipes/users/4173351/http://code.activestate.com/recipes/580788-implementing-class-based-callbacks-in-python/

<p style="color: grey"> Python recipe 580788 by <a href="/recipes/users/4173351/">Vasudev Ram</a> (<a href="/recipes/tags/callbacks/">callbacks</a>, <a href="/recipes/tags/classes/">classes</a>, <a href="/recipes/tags/functions/">functions</a>, <a href="/recipes/tags/methods/">methods</a>, <a href="/recipes/tags/objects/">objects</a>, <a href="/recipes/tags/programming/">programming</a>, <a href="/recipes/tags/python/">python</a>). </p> <p>This is a follow-on to this recently posted recipe:</p> <p>Implementing function-based callbacks in Python: <a href="https://code.activestate.com/recipes/580787-implementing-function-based-callbacks-in-python/?in=user-4173351" rel="nofollow">https://code.activestate.com/recipes/580787-implementing-function-based-callbacks-in-python/?in=user-4173351</a></p> <p>This new recipe shows how to create and use callbacks in Python, using classes with methods, instead of plain functions, as was done in the recipe linked above. All other points such as reasons and benefits for using callbacks, are more or less the same as mentioned in the previous recipe, except that class instances can carry state around, so to that extent, the two approaches are different.</p> <p><a href="https://jugad2.blogspot.in/2017/04/python-callbacks-using-classes-and.html" rel="nofollow">https://jugad2.blogspot.in/2017/04/python-callbacks-using-classes-and.html</a></p>

2011-10-05T18:38:43-07:00Eric Snowhttp://code.activestate.com/recipes/users/4177816/http://code.activestate.com/recipes/577822-turn-a-function-into-a-class/

<p style="color: grey"> Python recipe 577822 by <a href="/recipes/users/4177816/">Eric Snow</a> (<a href="/recipes/tags/classes/">classes</a>, <a href="/recipes/tags/functions/">functions</a>). </p> <p>The only catch is that the function has to return locals() at the end. And it doesn't do the __prepare__ part of 3.x metaclasses.</p>

2011-07-18T15:11:51-07:00Dominic Innocenthttp://code.activestate.com/recipes/users/4178543/http://code.activestate.com/recipes/577799-batting-ball/

<p style="color: grey"> Python recipe 577799 by <a href="/recipes/users/4178543/">Dominic Innocent</a> (<a href="/recipes/tags/functions/">functions</a>, <a href="/recipes/tags/simple/">simple</a>). </p> <p>Have fun batting a ball about a room &amp; sometimes getting funny results.</p>

2011-01-24T18:40:51-08:00Kevin L. Sitzehttp://code.activestate.com/recipes/users/4173535/http://code.activestate.com/recipes/577551-trace-decorator-for-debugging/

<p style="color: grey"> Python recipe 577551 by <a href="/recipes/users/4173535/">Kevin L. Sitze</a> (<a href="/recipes/tags/classes/">classes</a>, <a href="/recipes/tags/debug/">debug</a>, <a href="/recipes/tags/debugging/">debugging</a>, <a href="/recipes/tags/decorators/">decorators</a>, <a href="/recipes/tags/functions/">functions</a>, <a href="/recipes/tags/inspection/">inspection</a>, <a href="/recipes/tags/modules/">modules</a>, <a href="/recipes/tags/trace/">trace</a>). Revision 2. </p> <p>This package provides a decorator for tracing function and method calls in your applications. The tracing capabilities are managed through the logging package, and several mechanisms are provided for controlling the destination of the trace output.</p> <p>It also provides functionality for adding decorators to existing classes or modules.</p>