This is the core framework used by the pytest, tox, and devpi projects.
Please read the docs to learn more!
import pluggy hookspec = pluggy.HookspecMarker("myproject") hookimpl = pluggy.HookimplMarker("myproject") class MySpec(object): """A hook specification namespace. """ @hookspec def myhook(self, arg1, arg2): """My special little hook that you can customize. """ class Plugin_1(object): """A hook implementation namespace. """ @hookimpl def myhook(self, arg1, arg2): print("inside Plugin_1.myhook()") return arg1 + arg2 class Plugin_2(object): """A 2nd hook implementation namespace. """ @hookimpl def myhook(self, arg1, arg2): print("inside Plugin_2.myhook()") return arg1 - arg2 # create a manager and add the spec pm = pluggy.PluginManager("myproject") pm.add_hookspecs(MySpec) # register plugins pm.register(Plugin_1()) pm.register(Plugin_2()) # call our ``myhook`` hook results = pm.hook.myhook(arg1=1, arg2=2) print(results)