delta/python-packages/sqlalchemy.git/lib/sqlalchemy/util/langhelpers.py, branch pr_github_383

Add safe_reraise() + warnings only to Connection._autorollback

2017-03-27T15:14:24+00:00

Added an exception handler that will warn for the "cause" exception on
Py2K when the "autorollback" feature of :class:`.Connection` itself
raises an exception. In Py3K, the two exceptions are naturally reported
by the interpreter as one occurring during the handling of the other.
This is continuing with the series of changes for rollback failure
handling that were last visited as part of :ticket:`2696` in 1.0.12.

Change-Id: I600ba455a14ebaea27c6189889181f97c632f179
Fixes: #3946

New features from python 2.7

2017-03-17T18:19:21+00:00

After bump minimum supported version to 2.7 (1da9d3752160430c91534a8868ceb8c5ad1451d4), we can use new syntax.

Change-Id: Ib064c75a00562e641d132f9c57e5e69744200e05
Pull-request: https://github.com/zzzeek/sqlalchemy/pull/347

Allow SchemaType and Variant to work together

2017-03-07T21:24:18+00:00

Added support for the :class:`.Variant` and the :class:`.SchemaType`
objects to be compatible with each other.  That is, a variant
can be created against a type like :class:`.Enum`, and the instructions
to create constraints and/or database-specific type objects will
propagate correctly as per the variant's dialect mapping.

Also added testing for some potential double-event scenarios
on TypeDecorator but it seems usually this doesn't occur.

Change-Id: I4a7e7c26b4133cd14e870f5bc34a1b2f0f19a14a
Fixes: #2892

Support python3.6

2017-01-13T15:57:41+00:00

Corrects some warnings and adds tox config.  Adds DeprecationWarning
to the error category.   Large sweep for string literals w/ backslashes
as this is common in docstrings

Co-authored-by: Andrii Soldatenko
Fixes: #3886
Change-Id: Ia7c838dfbbe70b262622ed0803d581edc736e085
Pull-request: https://github.com/zzzeek/sqlalchemy/pull/337

update for 2017 copyright

2017-01-04T17:39:24+00:00

Change-Id: I4e8c2aa8fe817bb2af8707410fa0201f938781de

Check for module not present in util.wrap_callable()

2016-10-14T17:26:35+00:00

The newly added wrap_callable() function assumes __module__
is present when this is not the case for objects such as
functools.partial.

Change-Id: Ia226260e9a65419e26d5c1f7187512f7fd4bb7c1
Fixes: #3823

- happy new year

2016-01-29T16:20:22+00:00

- revert the change first made in a6fe4dc, as we are now generalizing

2016-01-28T20:01:31+00:00

the warning here to all safe_reraise() cases in Python 2.
- Revisiting :ticket:`2696`, first released in 1.0.10, which attempts to
work around Python 2's lack of exception context reporting by emitting
a warning for an exception that was interrupted by a second exception
when attempting to roll back the already-failed transaction; this
issue continues to occur for MySQL backends in conjunction with a
savepoint that gets unexpectedly lost, which then causes a
"no such savepoint" error when the rollback is attempted, obscuring
what the original condition was.

The approach has been generalized to the Core "safe
reraise" function which takes place across the ORM and Core in any
place that a transaction is being rolled back in response to an error
which occurred trying to commit, including the context managers
provided by :class:`.Session` and :class:`.Connection`, and taking
place for operations such as a failure on "RELEASE SAVEPOINT".
Previously, the fix was only in place for a specific path within
the ORM flush/commit process; it now takes place for all transational
context managers as well.
fixes #2696

Merge remote-tracking branch 'origin/pr/210'

2015-11-30T16:40:44+00:00

- convert wrap_callable() to a general purpose update_wrapper-like

2015-10-29T18:28:00+00:00

function; the caller still passes in the "wrapper"
- move tests for wrap_callable() to be generic util tests
- changelog for pullreq github:204