Psycopg2

^^^^^^^^^^^^^^^^^^^^^^^^^^^

- Alpine (musl) wheels now available (:ticket:`1392`).
- macOS arm64 (Apple M1) wheels now available (:ticket:`1482`).

^^^^^^^^^^^^^^^^^^^^^^^^^^^

- Raise `ValueError` for dates >= Y10k (:ticket:`1307`).
- `~psycopg2.errorcodes` map and `~psycopg2.errors` classes updated to
PostgreSQL 14.
- Add preliminary support for Python 3.11 (:tickets:`1376, 1386`).
- Wheel package bundled with OpenSSL 1.1.1l and PostgreSQL 14.1 libpq
(:ticket:`1388`).

^^^^^^^^^^^^^^^^^^^^^^^^^^^

- Fix regression with named `~psycopg2.sql.Placeholder` (:ticket:`1291`).

-------------------------

- ``with connection`` starts a transaction on autocommit transactions too
(:ticket:`941`).
- Timezones with fractional minutes are supported on Python 3.7 and following
(:ticket:`1272`).
- Escape table and column names in `~cursor.copy_from()` and
`~cursor.copy_to()`.
- Connection exceptions with sqlstate ``08XXX`` reclassified as
`~psycopg2.OperationalError` (a subclass of the previously used
`~psycopg2.DatabaseError`) (:ticket:`1148`).
- Include library dirs required from libpq to work around MacOS build problems
(:ticket:`1200`).

Other changes:

- Dropped support for Python 2.7, 3.4, 3.5 (:tickets:`1198, 1000, 1197`).
- Dropped support for mx.DateTime.
- Use `datetime.timezone` objects by default in datetime objects instead of
`~psycopg2.tz.FixedOffsetTimezone`.
- The `psycopg2.tz` module is deprecated and scheduled to be dropped in the
next major release.
- Provide :pep:`599` wheels packages (manylinux2014 tag) for i686 and x86_64
platforms.
- Provide :pep:`600` wheels packages (manylinux_2_24 tag) for aarch64 and
ppc64le platforms.
- Wheel package bundled with OpenSSL 1.1.1k and PostgreSQL 13.3 libpq.
- Build system for Linux/MacOS binary packages moved to GitHub Actions.

^^^^^^^^^^^^^^^^^^^^^^^^^^^

- Accept empty params as `~psycopg2.connect()` (:ticket:`1250`).
- Fix attributes refcount in `Column` initialisation (:ticket:`1252`).
- Allow re-initialisation of static variables in the C module (:ticket:`1267`).

^^^^^^^^^^^^^^^^^^^^^^^^^^^

- Fixed memory leak changing connection encoding to the current one
(:ticket:`1101`).
- Fixed search of mxDateTime headers in virtualenvs (:ticket:`996`).
- Added missing values from errorcodes (:ticket:`1133`).
- `cursor.query` reports the query of the last :sql:`COPY` operation too
(:ticket:`1141`).
- `~psycopg2.errorcodes` map and `~psycopg2.errors` classes updated to
PostgreSQL 13.
- Added wheel packages for ARM architecture (:ticket:`1125`).
- Wheel package bundled with OpenSSL 1.1.1g.