Update 2025-04-24_11:44:19

venv/lib/python3.11/site-packages/psycopg2/__init__.py

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+"""A Python driver for PostgreSQL
+
+psycopg is a PostgreSQL_ database adapter for the Python_ programming
+language. This is version 2, a complete rewrite of the original code to
+provide new-style classes for connection and cursor objects and other sweet
+candies. Like the original, psycopg 2 was written with the aim of being very
+small and fast, and stable as a rock.
+
+Homepage: https://psycopg.org/
+
+.. _PostgreSQL: https://www.postgresql.org/
+.. _Python: https://www.python.org/
+
+:Groups:
+  * `Connections creation`: connect
+  * `Value objects constructors`: Binary, Date, DateFromTicks, Time,
+    TimeFromTicks, Timestamp, TimestampFromTicks
+"""
+# psycopg/__init__.py - initialization of the psycopg module
+#
+# Copyright (C) 2003-2019 Federico Di Gregorio  <fog@debian.org>
+# Copyright (C) 2020-2021 The Psycopg Team
+#
+# psycopg2 is free software: you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as published
+# by the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# In addition, as a special exception, the copyright holders give
+# permission to link this program with the OpenSSL library (or with
+# modified versions of OpenSSL that use the same license as OpenSSL),
+# and distribute linked combinations including the two.
+#
+# You must obey the GNU Lesser General Public License in all respects for
+# all of the code used other than OpenSSL.
+#
+# psycopg2 is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+# License for more details.
+
+# Import modules needed by _psycopg to allow tools like py2exe to do
+# their work without bothering about the module dependencies.
+
+# Note: the first internal import should be _psycopg, otherwise the real cause
+# of a failed loading of the C module may get hidden, see
+# https://archives.postgresql.org/psycopg/2011-02/msg00044.php
+
+# Import the DBAPI-2.0 stuff into top-level module.
+
+from psycopg2._psycopg import (                     # noqa
+    BINARY, NUMBER, STRING, DATETIME, ROWID,
+
+    Binary, Date, Time, Timestamp,
+    DateFromTicks, TimeFromTicks, TimestampFromTicks,
+
+    Error, Warning, DataError, DatabaseError, ProgrammingError, IntegrityError,
+    InterfaceError, InternalError, NotSupportedError, OperationalError,
+
+    _connect, apilevel, threadsafety, paramstyle,
+    __version__, __libpq_version__,
+)
+
+
+# Register default adapters.
+
+from psycopg2 import extensions as _ext
+_ext.register_adapter(tuple, _ext.SQL_IN)
+_ext.register_adapter(type(None), _ext.NoneAdapter)
+
+# Register the Decimal adapter here instead of in the C layer.
+# This way a new class is registered for each sub-interpreter.
+# See ticket #52
+from decimal import Decimal                         # noqa
+from psycopg2._psycopg import Decimal as Adapter    # noqa
+_ext.register_adapter(Decimal, Adapter)
+del Decimal, Adapter
+
+
+def connect(dsn=None, connection_factory=None, cursor_factory=None, **kwargs):
+    """
+    Create a new database connection.
+
+    The connection parameters can be specified as a string:
+
+        conn = psycopg2.connect("dbname=test user=postgres password=secret")
+
+    or using a set of keyword arguments:
+
+        conn = psycopg2.connect(database="test", user="postgres", password="secret")
+
+    Or as a mix of both. The basic connection parameters are:
+
+    - *dbname*: the database name
+    - *database*: the database name (only as keyword argument)
+    - *user*: user name used to authenticate
+    - *password*: password used to authenticate
+    - *host*: database host address (defaults to UNIX socket if not provided)
+    - *port*: connection port number (defaults to 5432 if not provided)
+
+    Using the *connection_factory* parameter a different class or connections
+    factory can be specified. It should be a callable object taking a dsn
+    argument.
+
+    Using the *cursor_factory* parameter, a new default cursor factory will be
+    used by cursor().
+
+    Using *async*=True an asynchronous connection will be created. *async_* is
+    a valid alias (for Python versions where ``async`` is a keyword).
+
+    Any other keyword parameter will be passed to the underlying client
+    library: the list of supported parameters depends on the library version.
+
+    """
+    kwasync = {}
+    if 'async' in kwargs:
+        kwasync['async'] = kwargs.pop('async')
+    if 'async_' in kwargs:
+        kwasync['async_'] = kwargs.pop('async_')
+
+    dsn = _ext.make_dsn(dsn, **kwargs)
+    conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
+    if cursor_factory is not None:
+        conn.cursor_factory = cursor_factory
+
+    return conn