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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 serialized(func):
 """Run a function within a db transaction using SERIALIZABLE isolation. With this isolation level, committing will fail if this transaction read data that was since modified by another transaction. So we need to handle that case and retry the transaction. """


    @wraps(func)
    def wrapper(*args, **kw):
        attempts = 100
        session.remove()
        while attempts > 0:
            try:
                session.connection(
                    execution_options={"isolation_level": "SERIALIZABLE"}
                )
                result = func(*args, **kw)
                session.commit()
                return result
            except OperationalError as exc:
                session.rollback()
                if isinstance(exc.orig, TransactionRollbackError):
                    if attempts > 0:
                        attempts -= 1
                    else:
                        raise Exception(
                            "Could not commit serialized transaction "
                            "after 100 attempts."
                        )
                else:
                    raise
            finally:
                session.remove()
            time.sleep(random.expovariate(0.5))

    return wrapper