human
Complete the below
def _preprocess_attributes(attributes):

    ''''Pre-process incoming queue attributes before setting them'
    '''
 ... Write me a the Python program you requested?
assistant
#Here is the Python program you requested.
    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)))