gistfile1.sc

from decorator import decorator
import types

@decorator
def hello_printer(f, *args, **kwargs):
    print "Hello World"
    return f(*args, **kwargs)

def testing(name, bases, dict):
    for key, value in dict.iteritems():
        if isinstance(value, types.FunctionType) and not key.startswith("_"):
            print "decorating " + key
            dict[key] = hello_printer(value)
    return type(name, bases, dict)

class Settings(object):
    __metaclass__ = testing
    
    def m(self):
        print "m!"

Settings().m()

# >>> Settings().m()
# Hello World
# m!