mirror of
https://github.com/psycopg/psycopg2.git
synced 2024-11-10 19:16:34 +03:00
fdfa2de1a1
Added an adapter for None: it is usually not invoked as adaptation to NULL is a fast path in mogrify, but can be invoked by composite types. Notice that composite types still have the option to fast-path None (e.g. list adapter does).
89 lines
3.3 KiB
Python
89 lines
3.3 KiB
Python
"""A Python driver for PostgreSQL
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psycopg is a PostgreSQL_ database adapter for the Python_ programming
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language. This is version 2, a complete rewrite of the original code to
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provide new-style classes for connection and cursor objects and other sweet
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candies. Like the original, psycopg 2 was written with the aim of being very
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small and fast, and stable as a rock.
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Homepage: http://initd.org/projects/psycopg2
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.. _PostgreSQL: http://www.postgresql.org/
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.. _Python: http://www.python.org/
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:Groups:
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* `Connections creation`: connect
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* `Value objects constructors`: Binary, Date, DateFromTicks, Time,
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TimeFromTicks, Timestamp, TimestampFromTicks
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"""
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# psycopg/__init__.py - initialization of the psycopg module
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#
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# Copyright (C) 2003-2010 Federico Di Gregorio <fog@debian.org>
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#
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# psycopg2 is free software: you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published
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# by the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# In addition, as a special exception, the copyright holders give
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# permission to link this program with the OpenSSL library (or with
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# modified versions of OpenSSL that use the same license as OpenSSL),
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# and distribute linked combinations including the two.
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#
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# You must obey the GNU Lesser General Public License in all respects for
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# all of the code used other than OpenSSL.
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#
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# psycopg2 is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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# License for more details.
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# Import modules needed by _psycopg to allow tools like py2exe to do
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# their work without bothering about the module dependencies.
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#
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# TODO: we should probably use the Warnings framework to signal a missing
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# module instead of raising an exception (in case we're running a thin
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# embedded Python or something even more devious.)
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import sys, warnings
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if sys.version_info[0] >= 2 and sys.version_info[1] >= 3:
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try:
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import datetime as _psycopg_needs_datetime
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except:
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warnings.warn(
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"can't import datetime module probably needed by _psycopg",
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RuntimeWarning)
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if sys.version_info[0] >= 2 and sys.version_info[1] >= 4:
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try:
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import decimal as _psycopg_needs_decimal
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except:
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warnings.warn(
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"can't import decimal module probably needed by _psycopg",
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RuntimeWarning)
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del sys, warnings
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from psycopg2 import tz
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# Import the DBAPI-2.0 stuff into top-level module.
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from _psycopg import BINARY, NUMBER, STRING, DATETIME, ROWID
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from _psycopg import Binary, Date, Time, Timestamp
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from _psycopg import DateFromTicks, TimeFromTicks, TimestampFromTicks
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from _psycopg import Error, Warning, DataError, DatabaseError, ProgrammingError
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from _psycopg import IntegrityError, InterfaceError, InternalError
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from _psycopg import NotSupportedError, OperationalError
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from _psycopg import connect, apilevel, threadsafety, paramstyle
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from _psycopg import __version__
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# Register default adapters.
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import psycopg2.extensions as _ext
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_ext.register_adapter(tuple, _ext.SQL_IN)
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_ext.register_adapter(type(None), _ext.NoneAdapter)
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__all__ = filter(lambda k: not k.startswith('_'), locals().keys())
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