setattr(cls, f.__name__, im_f)

                attached_instance_method[0] = True

            for args in input:

                if isinstance(args, basestring):

                    args = [args]

                # ... then pull that named instance method off, turning it into

                # a bound method ...

                if self is not None:

                    args = [getattr(self, f.__name__)] + list(args)

                else:

                    args = [f] + list(args)

                # ... then yield that as a tuple. If those steps aren't

                # or doesn't run setup methods.

                yield tuple(args)

        f.__name__ = "_helper_for_%s" % (f.__name__,)

        parameterized_helper_method.parameterized_input = input

        parameterized_helper_method.parameterized_func = f

        return parameterized_helper_method

    return parameterized_helper

def to_safe_name(s):