Psycopg 2.7.4 released

Good afternoon,

we have released Psycopg version 2.7.4.

You will find a few bug fixes in the release, and an important change
in the Wheels packages. In short, installing the 'psycopg2' package
from binary will now raise a warning on import: if you still want to
install from binary you should now install the 'psycopg2-binary'
package (this is only the package name to ask pip, no change is
required to the Python import statements). All the details of the
story are available at:
<http://initd.org/psycopg/articles/2018/02/08/psycopg-274-released/>.

This is the summary of the bugs fixed in this release:

- Moving away from installing the wheel package by default.
  Packages installed from wheel raise a warning on import. Added package
  'psycopg2-binary' to install from wheel instead (ticket #543).
- Convert fields names into valid Python identifiers in
  'NamedTupleCursor' (ticket #211).
- Fixed Solaris 10 support (ticket #532).
- 'cursor.mogrify()' can be called on closed cursors (ticket #579).
- Fixed setting session characteristics in corner cases on autocommit
  connections (ticket #580).
- Fixed 'MinTimeLoggingCursor' on Python 3 (ticket #609).
- Fixed parsing of array of points as floats (ticket #613).
- Fixed '__libpq_version__' building with libpq >= 10.1 (ticket 632).
- Fixed 'rowcount' after 'executemany()' with 'RETURNING' statements
  (ticket 633).
- Fixed compatibility problem with pypy3 (ticket #649).
- Wheel packages compiled against PostgreSQL 10.1 libpq and OpenSSL 1.0.2n.
- Wheel packages for Python 2.6 no more available (support dropped
  from wheel building infrastructure).

Happy hacking!


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Psycopg is the most popular PostgreSQL adapter for the Python
programming language. At its core it fully implements the Python DB
API 2.0 specifications. Several extensions allow access to many of the
features offered by PostgreSQL.