human
I wrote the below code

    if isinstance(attributes, six.string_types):
        attributes = json.loads(attributes)
    def stringified(val):
        if isinstance(val, dict):
            return json.dumps(val)
        return val
    return dict(((attr, stringified(val)) for (attr, val) in six.iteritems(attributes)))

What's a good function header?
assistant
#Here's a good function header.

def _preprocess_attributes(attributes):