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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def common_values_dict():
 """Build a basic values object used in every create method. All our resources contain a same subset of value. Instead of redoing this code everytime, this method ensures it is done only at one place. """

    now = datetime.datetime.utcnow().isoformat()
    etag = utils.gen_etag()
    values = {
        'id': utils.gen_uuid(),
        'created_at': now,
        'updated_at': now,
        'etag': etag
    }

    return values