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106 lines
4.8 KiB
Plaintext
106 lines
4.8 KiB
Plaintext
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Announce: Release of PyGreSQL version 2.4
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===============================================
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PyGreSQL v2.4 has been released.
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It is available at: ftp://ftp.druid.net/pub/distrib/PyGreSQL.tgz. If
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you are on NetBSD, look in the packages directory under databases. If
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it isn't there yet, it should be there shortly. You can also pick up the
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package files from ftp://ftp.druid.net/pub/distrib/pygresql.pkg.tgz.
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There is also a package in the FreeBSD ports collection but as I write
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this it is at version 2.1. I will try to get that updated as well.
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PostgreSQL is a database system derived from Postgres4.2. It conforms
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to (most of) ANSI SQL and offers many interesting capabilities (C
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dynamic linking for functions or type definition, etc.). This package
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is copyright by the Regents of the University of California, and is
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freely distributable.
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Python is an interpreted programming language. It is object oriented,
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simple to use (light syntax, simple and straightforward statements), and
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has many extensions for building GUIs, interfacing with WWW, etc. An
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intelligent web browser (HotJava like) is currently under development
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(November 1995), and this should open programmers many doors. Python is
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copyrighted by Stichting S Mathematisch Centrum, Amsterdam, The
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Netherlands, and is freely distributable.
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PyGreSQL is a python module that interfaces to a PostgreSQL database. It
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embeds the PostgreSQL query library to allow easy use of the powerful
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PostgreSQL features from a Python script.
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I wanted to have DB-SIG API support in the next release but there are
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enough fixes and improvements to make one more release before starting
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on that. The next version will be 3.0 and have the DB-SIG API support.
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Note that I said this for 2.4 but some required changes from others have
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been slow in coming (I'm not complaining, people do have lives) and
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there were enough fixes that I didn't want to keep them from a release.
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PyGreSQL 2.3 was developed and tested on a NetBSD 1.3_BETA system. It
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is based on the PyGres95 code written by Pascal Andre,
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andre@chimay.via.ecp.fr. I changed the version to 2.0 and updated the
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code for Python 1.5 and PostgreSQL 6.2.1. While I was at it I upgraded
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the code to use full ANSI style prototypes and changed the order of
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arguments to connect. Later versions are fixes and enhancements to that.
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Important changes from PyGreSQL 2.3 to PyGreSQL 2.4:
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- Insert returns None if the user doesn't have select permissions
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on the table. It can (and does) happen that one has insert but
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not select permissions on a table.
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- Added ntuples() method to query object (brit@druid.net)
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- Corrected a bug related to getresult() and the money type
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- Corrected a but related to negative money amounts
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- Allow update based on primary key if munged oid not available and
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table has a primary key
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- Add many __doc__ strings. (andre@via.ecp.fr)
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Important changes from PyGreSQL 2.2 to PyGreSQL 2.3:
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- connect.host returns "localhost" when connected to Unix socket
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(torppa@tuhnu.cutery.fi)
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- Use PyArg_ParseTupleAndKeywords in connect() (torppa@tuhnu.cutery.fi)
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- fixes and cleanups (torppa@tuhnu.cutery.fi)
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- Fixed memory leak in dictresult() (terekhov@emc.com)
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- Deprecated pgext.py - functionality now in pg.py
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- More cleanups to the tutorial
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- Added fileno() method - terekhov@emc.com (Mikhail Terekhov)
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- added money type to quoting function
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- Compiles cleanly with more warnings turned on
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- Returns PostgreSQL error message on error
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- Init accepts keywords (Jarkko Torppa)
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- Convenience functions can be overridden (Jarkko Torppa)
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- added close() method
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Important changes from PyGreSQL 2.1 to PyGreSQL 2.2:
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- Added user and password support thanks to Ng Pheng Siong <ngps@post1.com>
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- Insert queries return the inserted oid
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- Add new pg wrapper (C module renamed to _pg)
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- Wrapped database connection in a class.
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- Cleaned up some of the tutorial. (More work needed.)
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- Added version and __version__. Thanks to thilo@eevolute.com for
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the suggestion.
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Important changes from PyGreSQL 2.0 to PyGreSQL 2.1:
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- return fields as proper Python objects for field type
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- Cleaned up pgext.py
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- Added dictresult method
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Important changes from Pygres95 1.0b to PyGreSQL 2.0:
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- Updated code for PostgreSQL 6.2.1 and Python 1.5.
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- Reformatted code and converted to ANSI .
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- Changed name to PyGreSQL (from PyGres95.)
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- Changed order of arguments to connect function.
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- Created new type pgqueryobject and moved certain methods to it.
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- Added a print function for pgqueryobject
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- Various code changes - mostly stylistic.
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For more information about each package, please have a look to their
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web pages:
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- Python : http://www.python.org/
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- PostgreSQL : http://www.PostgreSQL.org/
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- PyGreSQL : http://www.druid.net/pygresql/
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D'Arcy J.M. Cain
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darcy@druid.net
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