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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 search_last_modified_identities(db, after):
 """Look for the uuids of identities modified on or after a given date. This function returns the uuids of identities modified on the given date or after it. The result is a list of uuids identities. :param db: database manager :param after: look for identities modified on or after this date :returns: a list of uuids of identities modified """

    with db.connect() as session:
        query = session.query(Identity.id).\
            filter(Identity.last_modified >= after)
        ids = [id_.id for id_ in query.order_by(Identity.id).all()]

    return ids