Hello all, I'm trying to implement a plugin system in a project using the twisted plugin framework. I've read through the docs pretty thoroughly, but I can't seem to figure out what I'm doing wrong. Attached is a sample case that should illustrate the problem. The layout is as follows: plugin_dir/ plugin_dir/test/ plugin_dir/test/plugins/ plugin_dir/test/plugins/myplugin.py test/ test/__init__.py test/plugins/ test/plugins/__init__.py test/sample.py test_plugin.py First I created the test.plugins package, and included the following in test/plugins/__init__.py: import os, sys __path__ = [os.path.abspath(os.path.join(x, 'test', 'plugins')) for x in sys.path] __all__ = [] Then I created my interfaces in the test.sample module: from zope import interface class ISamplePlugin(interface.Interface): '''My Sample Plugin Class''' Next, I created the plugin in an arbitrary directory, under plugin_dir/test/plugins/myplugin.py: from zope.interface import implements from twisted import plugin from test.sample import ISamplePlugin class MyPlugin(object): implements(plugin.IPlugin, ISamplePlugin) Finally, here's the sample script that tries to load the plugins in the arbitrary directory: from twisted import plugin import sys sys.path.append('.') sys.path.append('./plugin_dir') from test import sample, plugins from twisted import plugin plugin_result = plugin.getPlugins(sample.ISamplePlugin, plugins) for plugin in plugin_result: print repr(plugin) + ' was found.' Which gives no output. Here are the things I've checked for: * './plugin_dir' is definitely on the pythonpath when getPlugins is called. I've also tried using an absolute path. * once the path is modified, I can import manually with: import test.plugins.myplugins I'm using the latest Twisted-SVN, under the pythonmac.org Python 2.4.4 distribution on Mac OS X 10.4.10. Any help would be greatly appreciated. Thanks in advance, -phil