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devel / comp.lang.python.announce / [Python-announce] SQLObject 3.10.2

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o [Python-announce] SQLObject 3.10.2Oleg Broytman

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 by: Oleg Broytman - Wed, 9 Aug 2023 12:19 UTC

Hello!

I'm pleased to announce version 3.10.2, a minor feature release
and the second bugfix release of branch 3.10 of SQLObject.

What's new in SQLObject
=======================

The contributor for this release is Igor Yudytskiy. Thanks!

Minor features
--------------

* Class ``Alias`` grows a method ``.select()`` to match ``SQLObject.select()``.

Bug fixes
---------

* Fixed a bug in ``SQLRelatedJoin`` in the case where the table joins with
itself; in the resulting SQL two instances of the table must use different
aliases. Thanks to Igor Yudytskiy for providing an elaborated bug report.

For a more complete list, please see the news:
http://sqlobject.org/News.html

What is SQLObject
=================

SQLObject is a free and open-source (LGPL) Python object-relational
mapper. Your database tables are described as classes, and rows are
instances of those classes. SQLObject is meant to be easy to use and
quick to get started with.

SQLObject supports a number of backends: MySQL/MariaDB (with a number of
DB API drivers: ``MySQLdb``, ``mysqlclient``, ``mysql-connector``,
``PyMySQL``, ``mariadb``), PostgreSQL (``psycopg2``, ``PyGreSQL``,
partially ``pg8000`` and ``py-postgresql``), SQLite (builtin ``sqlite``,
``pysqlite``, partially ``supersqlite``); connections to other backends
- Firebird, Sybase, MSSQL and MaxDB (also known as SAPDB) - are less
debugged).

Python 2.7 or 3.4+ is required.

Where is SQLObject
==================

Site:
http://sqlobject.org

Download:
https://pypi.org/project/SQLObject/3.10.2a0.dev20221222/

News and changes:
http://sqlobject.org/News.html

StackOverflow:
https://stackoverflow.com/questions/tagged/sqlobject

Mailing lists:
https://sourceforge.net/p/sqlobject/mailman/

Development:
http://sqlobject.org/devel/

Developer Guide:
http://sqlobject.org/DeveloperGuide.html

Example
=======

Install::

$ pip install sqlobject

Create a simple class that wraps a table::

>>> from sqlobject import *
>>>
>>> sqlhub.processConnection = connectionForURI('sqlite:/:memory:')
>>>
>>> class Person(SQLObject):
... fname = StringCol()
... mi = StringCol(length=1, default=None)
... lname = StringCol()
...
>>> Person.createTable()

Use the object::

>>> p = Person(fname="John", lname="Doe")
>>> p
<Person 1 fname='John' mi=None lname='Doe'>
>>> p.fname
'John'
>>> p.mi = 'Q'
>>> p2 = Person.get(1)
>>> p2
<Person 1 fname='John' mi='Q' lname='Doe'>
>>> p is p2
True

Queries::

>>> p3 = Person.selectBy(lname="Doe")[0]
>>> p3
<Person 1 fname='John' mi='Q' lname='Doe'>
>>> pc = Person.select(Person.q.lname=="Doe").count()
>>> pc
1

Oleg.
--
Oleg Broytman https://phdru.name/ phd@phdru.name
Programmers don't die, they just GOSUB without RETURN.


devel / comp.lang.python.announce / [Python-announce] SQLObject 3.10.2

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