def gradify_closure(func, argmaps, func_kwargs={}):

    func_kwargs = dict(func_kwargs)

    def gradify_func(*args):

        kwargs = {}
        for (arg, argmap) in zip(args, argmaps):

            postprocessing = argmap.get("postprocessing", None)
            if postprocessing:
                arg = eval(postprocessing)(arg)
                
            kw_label = argmap["label"]
            kwargs[kw_label] = arg

        return func(**kwargs, **func_kwargs)

    return gradify_func

def compile_callable(source, target_name=None):

    ldict = {}
    exec(source, globals(), ldict)

    if target_name:
        return ldict[target_name]
    else:
        for v in ldict.values():
            if callable(v):
                return v