Géry <gery.o...@gmail.com> added the comment: @Aymeric Augustin
> While you're there, it would be cool to provide "connection.autocommit = > True" as an API to enable autocommit, because "connection.isolation_level = > None" isn't a good API at all -- it's very obscure and has nothing to do with > isolation level whatsoever. +1. We could use this new autocommit property to enable the new full transactional mode (that is to say with transactional DDL): ``` connection.autocommit = True # enable the autocommit mode connection.autocommit = False # disable the autocommit mode (enable the full transactional mode) connection.autocommit = None # fallback to connection.isolation_level ``` To transition from the old partial transactional mode (without transactional DDL) by default to the new full transactional mode (with transactional DDL) by default, we could use the following migration strategy: 1. During the deprecation period: - Add the new autocommit property with the value None by default, so that the old partial transactional mode is still the default. - Add a deprecation warning for the value None of the autocommit property, in favor of the other values True and False. It will prompt users who enabled the autocommit mode with connection.isolation_level = None to use connection.autocommit = True instead, and users who disabled the autocommit mode (that is to say users who enabled the old partial transactional mode) with connection.isolation_level = DEFERRED/IMMEDIATE/EXCLUSIVE to use connection.autocommit = False instead AND add to their code the potentially missing connection.commit() calls required by the new full transactional mode for committing DDL statements. 2. After the deprecation period: - Set the value of the autocommit property to False by default, so that the new full transactional mode becomes the new default. - Remove the value None of the autocommit property and its deprecation warning. - Remove the value None of the isolation_level property, so that the old partial transactional mode disappears. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue10740> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
