Popular recipes tagged "plugin" but not "gimp"

PluginManager - Extending Project Functionality By Using Custom Modules/Plugins On The Fly. (Python)

2010-05-07T15:32:10-07:00

Python recipe 577216 by AJ. Mayorga (extending, extensible, modules, plugin). Revision 4.

This demo shows how you can create and manage your own custom plugins for extending functionality in your Python projects. There are no safety wrappers in this demo for restricting plugins aside from that fact that plugins are run as an extention of a management class which is run in its own instance only receiving data passed to it by the RumModules method, that said security should ideally be applied to the ModuleAPI class, by restricting __builtins__ on eval calls and/or validating plugin content and parameters which can be done by extending the Prepaser Class. For a great recipe/demo of restricting eval call see http://code.activestate.com/recipes/496746.

That aside it was alot of fun to write and use. Enjoy

PS: you will need http://code.activestate.com/recipes/577144/ to import Xceptions

Find all subclasses of a given class (Python)

2009-11-04T20:26:08-08:00

Python recipe 576949 by Gabriel Genellina (class, extending, inheritance, plugin, subclass, subclasses, type). Revision 3.

itersubclasses(cls) returns a generator over all subclasses of cls, in depth first order. cls must be a new-style class; old-style classes are not supported.

Component architecture through data descriptors and function decorators (Python)

2009-07-23T11:13:48-07:00

Python recipe 576852 by Danny G (abc, abstract_base_class, component, interface, plugin). Revision 5.

My desire was to design a class with defined attributes that when assigned on instances, would expand the instance's functionality. In other words if I create an instance of class A, then assign a 'component' attribute upon that instance, I should be able to call methods of the component object through the original instance. I believe this is somewhat similar to interfaces and abstract base classes (and I read up on both a bit), but I want to rely more on introspection of the object to see what it can do versus confining it to a set interface.

Components and Abilities (different implementation of Component architecture) (Python)

2009-07-23T13:26:32-07:00

Python recipe 576854 by Danny G (abc, ability, abstract_base_class, component, descriptor, dynamic, interface, plugin). Revision 6.

I define a 'Component' as an attribute (typing optional) that instances can assign objects to. Nothing special there, but their usefulness comes in with 'Abilities'. If a class inherits from 'ClassWithAbilities', it will be given a special attribute 'abilities' that will grow/shrink when other classes with abilities are assigned to an instances attributes. It increases/decreases the functionality of the instance depending on what objects are assigned to it. All of these abilities are accessed through the 'abilities' attribute. This is a redesign of Recipe 576852, but I believe is different enough to warrant a new recipe.