wrap_register.py

registered_methods = {}


class GetRegisteredMethodsMetaclass(type):
    def __getattr__(self, item):
        func = registered_methods.get(item)
        if func:
            return func
        raise AttributeError('No registered method:', item)


class Registry(object):
    __metaclass__ = GetRegisteredMethodsMetaclass


def wrapper(**kwargs_outer):
    print 'in outside wrapper with kwargs', kwargs_outer

    def decorator(f):
        def union_the_kwargs_and_call(**the_kwargs):
            the_kwargs.update(kwargs_outer)
            return f(**the_kwargs)

        registered_methods[f.__name__] = union_the_kwargs_and_call
        return f

    return decorator


@wrapper(test=1)
def curve_info(**kwargs):
    print kwargs
    return 1


print 'Registry.curve_info: ', Registry.curve_info()
print 'Registry.curve_info: ', Registry.curve_info(my_kwargs='stu')