AOP in Python using logilab library

hello_aop.py

from logilab.aspects.core import AbstractAspect
from logilab.aspects.weaver import weaver

class MyAspect(AbstractAspect):
    def before(self, wobj, context, *args, **kwargs):
        print "Before", context['method_name']

    def after(self, wobj, context, *args, **kwargs):
        print "After", context['method_name']

class Foo:
    def bar(self):
        print "In bar"

    def baz(self):
        print "In baz"

    def quux(self):
        print "In quux"

weaver.weave_methods(Foo, MyAspect)
foo = Foo()
foo.bar()
foo.baz()
foo.quux()