psql

psycopg2-2.9.1.dist-info/INSTALLER

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+pip

psycopg2-2.9.1.dist-info/LICENSE

@@ -0,0 +1,49 @@
+psycopg2 and the LGPL
+---------------------
+
+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.
+
+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.
+
+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. If you modify file(s) with this
+exception, you may extend this exception to your version of the file(s),
+but you are not obligated to do so. If you do not wish to do so, delete
+this exception statement from your version. If you delete this exception
+statement from all source files in the program, then also delete it here.
+
+You should have received a copy of the GNU Lesser General Public License
+along with psycopg2 (see the doc/ directory.)
+If not, see <https://www.gnu.org/licenses/>.
+
+
+Alternative licenses
+--------------------
+
+The following BSD-like license applies (at your option) to the files following
+the pattern ``psycopg/adapter*.{h,c}`` and ``psycopg/microprotocol*.{h,c}``:
+
+ Permission is granted to anyone to use this software for any purpose,
+ including commercial applications, and to alter it and redistribute it
+ freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not
+    claim that you wrote the original software. If you use this
+    software in a product, an acknowledgment in the product documentation
+    would be appreciated but is not required.
+
+ 2. Altered source versions must be plainly marked as such, and must not
+    be misrepresented as being the original software.
+
+ 3. This notice may not be removed or altered from any source distribution.

psycopg2-2.9.1.dist-info/METADATA

@@ -0,0 +1,110 @@
+Metadata-Version: 2.1
+Name: psycopg2
+Version: 2.9.1
+Summary: psycopg2 - Python-PostgreSQL Database Adapter
+Home-page: https://psycopg.org/
+Author: Federico Di Gregorio
+Author-email: fog@initd.org
+Maintainer: Daniele Varrazzo
+Maintainer-email: daniele.varrazzo@gmail.org
+License: LGPL with exceptions
+Project-URL: Homepage, https://psycopg.org/
+Project-URL: Documentation, https://www.psycopg.org/docs/
+Project-URL: Code, https://github.com/psycopg/psycopg2
+Project-URL: Issue Tracker, https://github.com/psycopg/psycopg2/issues
+Project-URL: Download, https://pypi.org/project/psycopg2/
+Platform: any
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Intended Audience :: Developers
+Classifier: License :: OSI Approved :: GNU Library or Lesser General Public License (LGPL)
+Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.6
+Classifier: Programming Language :: Python :: 3.7
+Classifier: Programming Language :: Python :: 3.8
+Classifier: Programming Language :: Python :: 3.9
+Classifier: Programming Language :: Python :: 3 :: Only
+Classifier: Programming Language :: Python :: Implementation :: CPython
+Classifier: Programming Language :: C
+Classifier: Programming Language :: SQL
+Classifier: Topic :: Database
+Classifier: Topic :: Database :: Front-Ends
+Classifier: Topic :: Software Development
+Classifier: Topic :: Software Development :: Libraries :: Python Modules
+Classifier: Operating System :: Microsoft :: Windows
+Classifier: Operating System :: Unix
+Requires-Python: >=3.6
+License-File: LICENSE
+
+Psycopg is the most popular PostgreSQL database adapter for the Python
+programming language.  Its main features are the complete implementation of
+the Python DB API 2.0 specification and the thread safety (several threads can
+share the same connection).  It was designed for heavily multi-threaded
+applications that create and destroy lots of cursors and make a large number
+of concurrent "INSERT"s or "UPDATE"s.
+
+Psycopg 2 is mostly implemented in C as a libpq wrapper, resulting in being
+both efficient and secure.  It features client-side and server-side cursors,
+asynchronous communication and notifications, "COPY TO/COPY FROM" support.
+Many Python types are supported out-of-the-box and adapted to matching
+PostgreSQL data types; adaptation can be extended and customized thanks to a
+flexible objects adaptation system.
+
+Psycopg 2 is both Unicode and Python 3 friendly.
+
+
+Documentation
+-------------
+
+Documentation is included in the ``doc`` directory and is `available online`__.
+
+.. __: https://www.psycopg.org/docs/
+
+For any other resource (source code repository, bug tracker, mailing list)
+please check the `project homepage`__.
+
+.. __: https://psycopg.org/
+
+
+Installation
+------------
+
+Building Psycopg requires a few prerequisites (a C compiler, some development
+packages): please check the install_ and the faq_ documents in the ``doc`` dir
+or online for the details.
+
+If prerequisites are met, you can install psycopg like any other Python
+package, using ``pip`` to download it from PyPI_::
+
+    $ pip install psycopg2
+
+or using ``setup.py`` if you have downloaded the source package locally::
+
+    $ python setup.py build
+    $ sudo python setup.py install
+
+You can also obtain a stand-alone package, not requiring a compiler or
+external libraries, by installing the `psycopg2-binary`_ package from PyPI::
+
+    $ pip install psycopg2-binary
+
+The binary package is a practical choice for development and testing but in
+production it is advised to use the package built from sources.
+
+.. _PyPI: https://pypi.org/project/psycopg2/
+.. _psycopg2-binary: https://pypi.org/project/psycopg2-binary/
+.. _install: https://www.psycopg.org/docs/install.html#install-from-source
+.. _faq: https://www.psycopg.org/docs/faq.html#faq-compile
+
+:Linux/OSX: |gh-actions|
+:Windows: |appveyor|
+
+.. |gh-actions| image:: https://github.com/psycopg/psycopg2/actions/workflows/tests.yml/badge.svg
+    :target: https://github.com/psycopg/psycopg2/actions/workflows/tests.yml
+    :alt: Linux and OSX build status
+
+.. |appveyor| image:: https://ci.appveyor.com/api/projects/status/github/psycopg/psycopg2?branch=master&svg=true
+    :target: https://ci.appveyor.com/project/psycopg/psycopg2/branch/master
+    :alt: Windows build status
+
+

psycopg2-2.9.1.dist-info/RECORD

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psycopg2-2.9.1.dist-info/WHEEL

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+Wheel-Version: 1.0
+Generator: bdist_wheel (0.37.0)
+Root-Is-Purelib: false
+Tag: cp39-cp39-macosx_10_9_x86_64
+

psycopg2-2.9.1.dist-info/top_level.txt

@@ -0,0 +1 @@
+psycopg2

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

psycopg2/_ipaddress.py

@@ -0,0 +1,90 @@
+"""Implementation of the ipaddres-based network types adaptation
+"""
+
+# psycopg/_ipaddress.py - Ipaddres-based network types adaptation
+#
+# Copyright (C) 2016-2019 Daniele Varrazzo  <daniele.varrazzo@gmail.com>
+# 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.
+
+from psycopg2.extensions import (
+    new_type, new_array_type, register_type, register_adapter, QuotedString)
+
+# The module is imported on register_ipaddress
+ipaddress = None
+
+# The typecasters are created only once
+_casters = None
+
+
+def register_ipaddress(conn_or_curs=None):
+    """
+    Register conversion support between `ipaddress` objects and `network types`__.
+
+    :param conn_or_curs: the scope where to register the type casters.
+        If `!None` register them globally.
+
+    After the function is called, PostgreSQL :sql:`inet` values will be
+    converted into `~ipaddress.IPv4Interface` or `~ipaddress.IPv6Interface`
+    objects, :sql:`cidr` values into into `~ipaddress.IPv4Network` or
+    `~ipaddress.IPv6Network`.
+
+    .. __: https://www.postgresql.org/docs/current/static/datatype-net-types.html
+    """
+    global ipaddress
+    import ipaddress
+
+    global _casters
+    if _casters is None:
+        _casters = _make_casters()
+
+    for c in _casters:
+        register_type(c, conn_or_curs)
+
+    for t in [ipaddress.IPv4Interface, ipaddress.IPv6Interface,
+              ipaddress.IPv4Network, ipaddress.IPv6Network]:
+        register_adapter(t, adapt_ipaddress)
+
+
+def _make_casters():
+    inet = new_type((869,), 'INET', cast_interface)
+    ainet = new_array_type((1041,), 'INET[]', inet)
+
+    cidr = new_type((650,), 'CIDR', cast_network)
+    acidr = new_array_type((651,), 'CIDR[]', cidr)
+
+    return [inet, ainet, cidr, acidr]
+
+
+def cast_interface(s, cur=None):
+    if s is None:
+        return None
+    # Py2 version force the use of unicode. meh.
+    return ipaddress.ip_interface(str(s))
+
+
+def cast_network(s, cur=None):
+    if s is None:
+        return None
+    return ipaddress.ip_network(str(s))
+
+
+def adapt_ipaddress(obj):
+    return QuotedString(str(obj))

psycopg2/_json.py

@@ -0,0 +1,199 @@
+"""Implementation of the JSON adaptation objects
+
+This module exists to avoid a circular import problem: pyscopg2.extras depends
+on psycopg2.extension, so I can't create the default JSON typecasters in
+extensions importing register_json from extras.
+"""
+
+# psycopg/_json.py - Implementation of the JSON adaptation objects
+#
+# Copyright (C) 2012-2019 Daniele Varrazzo  <daniele.varrazzo@gmail.com>
+# 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 json
+
+from psycopg2._psycopg import ISQLQuote, QuotedString
+from psycopg2._psycopg import new_type, new_array_type, register_type
+
+
+# oids from PostgreSQL 9.2
+JSON_OID = 114
+JSONARRAY_OID = 199
+
+# oids from PostgreSQL 9.4
+JSONB_OID = 3802
+JSONBARRAY_OID = 3807
+
+
+class Json:
+    """
+    An `~psycopg2.extensions.ISQLQuote` wrapper to adapt a Python object to
+    :sql:`json` data type.
+
+    `!Json` can be used to wrap any object supported by the provided *dumps*
+    function. If none is provided, the standard :py:func:`json.dumps()` is
+    used.
+
+    """
+    def __init__(self, adapted, dumps=None):
+        self.adapted = adapted
+        self._conn = None
+        self._dumps = dumps or json.dumps
+
+    def __conform__(self, proto):
+        if proto is ISQLQuote:
+            return self
+
+    def dumps(self, obj):
+        """Serialize *obj* in JSON format.
+
+        The default is to call `!json.dumps()` or the *dumps* function
+        provided in the constructor. You can override this method to create a
+        customized JSON wrapper.
+        """
+        return self._dumps(obj)
+
+    def prepare(self, conn):
+        self._conn = conn
+
+    def getquoted(self):
+        s = self.dumps(self.adapted)
+        qs = QuotedString(s)
+        if self._conn is not None:
+            qs.prepare(self._conn)
+        return qs.getquoted()
+
+    def __str__(self):
+        # getquoted is binary
+        return self.getquoted().decode('ascii', 'replace')
+
+
+def register_json(conn_or_curs=None, globally=False, loads=None,
+                  oid=None, array_oid=None, name='json'):
+    """Create and register typecasters converting :sql:`json` type to Python objects.
+
+    :param conn_or_curs: a connection or cursor used to find the :sql:`json`
+        and :sql:`json[]` oids; the typecasters are registered in a scope
+        limited to this object, unless *globally* is set to `!True`. It can be
+        `!None` if the oids are provided
+    :param globally: if `!False` register the typecasters only on
+        *conn_or_curs*, otherwise register them globally
+    :param loads: the function used to parse the data into a Python object. If
+        `!None` use `!json.loads()`, where `!json` is the module chosen
+        according to the Python version (see above)
+    :param oid: the OID of the :sql:`json` type if known; If not, it will be
+        queried on *conn_or_curs*
+    :param array_oid: the OID of the :sql:`json[]` array type if known;
+        if not, it will be queried on *conn_or_curs*
+    :param name: the name of the data type to look for in *conn_or_curs*
+
+    The connection or cursor passed to the function will be used to query the
+    database and look for the OID of the :sql:`json` type (or an alternative
+    type if *name* if provided). No query is performed if *oid* and *array_oid*
+    are provided.  Raise `~psycopg2.ProgrammingError` if the type is not found.
+
+    """
+    if oid is None:
+        oid, array_oid = _get_json_oids(conn_or_curs, name)
+
+    JSON, JSONARRAY = _create_json_typecasters(
+        oid, array_oid, loads=loads, name=name.upper())
+
+    register_type(JSON, not globally and conn_or_curs or None)
+
+    if JSONARRAY is not None:
+        register_type(JSONARRAY, not globally and conn_or_curs or None)
+
+    return JSON, JSONARRAY
+
+
+def register_default_json(conn_or_curs=None, globally=False, loads=None):
+    """
+    Create and register :sql:`json` typecasters for PostgreSQL 9.2 and following.
+
+    Since PostgreSQL 9.2 :sql:`json` is a builtin type, hence its oid is known
+    and fixed. This function allows specifying a customized *loads* function
+    for the default :sql:`json` type without querying the database.
+    All the parameters have the same meaning of `register_json()`.
+    """
+    return register_json(conn_or_curs=conn_or_curs, globally=globally,
+        loads=loads, oid=JSON_OID, array_oid=JSONARRAY_OID)
+
+
+def register_default_jsonb(conn_or_curs=None, globally=False, loads=None):
+    """
+    Create and register :sql:`jsonb` typecasters for PostgreSQL 9.4 and following.
+
+    As in `register_default_json()`, the function allows to register a
+    customized *loads* function for the :sql:`jsonb` type at its known oid for
+    PostgreSQL 9.4 and following versions.  All the parameters have the same
+    meaning of `register_json()`.
+    """
+    return register_json(conn_or_curs=conn_or_curs, globally=globally,
+        loads=loads, oid=JSONB_OID, array_oid=JSONBARRAY_OID, name='jsonb')
+
+
+def _create_json_typecasters(oid, array_oid, loads=None, name='JSON'):
+    """Create typecasters for json data type."""
+    if loads is None:
+        loads = json.loads
+
+    def typecast_json(s, cur):
+        if s is None:
+            return None
+        return loads(s)
+
+    JSON = new_type((oid, ), name, typecast_json)
+    if array_oid is not None:
+        JSONARRAY = new_array_type((array_oid, ), f"{name}ARRAY", JSON)
+    else:
+        JSONARRAY = None
+
+    return JSON, JSONARRAY
+
+
+def _get_json_oids(conn_or_curs, name='json'):
+    # lazy imports
+    from psycopg2.extensions import STATUS_IN_TRANSACTION
+    from psycopg2.extras import _solve_conn_curs
+
+    conn, curs = _solve_conn_curs(conn_or_curs)
+
+    # Store the transaction status of the connection to revert it after use
+    conn_status = conn.status
+
+    # column typarray not available before PG 8.3
+    typarray = conn.info.server_version >= 80300 and "typarray" or "NULL"
+
+    # get the oid for the hstore
+    curs.execute(
+        "SELECT t.oid, %s FROM pg_type t WHERE t.typname = %%s;"
+        % typarray, (name,))
+    r = curs.fetchone()
+
+    # revert the status of the connection as before the command
+    if conn_status != STATUS_IN_TRANSACTION and not conn.autocommit:
+        conn.rollback()
+
+    if not r:
+        raise conn.ProgrammingError(f"{name} data type not found")
+
+    return r

psycopg2/_range.py

@@ -0,0 +1,537 @@
+"""Implementation of the Range type and adaptation
+
+"""
+
+# psycopg/_range.py - Implementation of the Range type and adaptation
+#
+# Copyright (C) 2012-2019 Daniele Varrazzo  <daniele.varrazzo@gmail.com>
+# 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 re
+
+from psycopg2._psycopg import ProgrammingError, InterfaceError
+from psycopg2.extensions import ISQLQuote, adapt, register_adapter
+from psycopg2.extensions import new_type, new_array_type, register_type
+
+
+class Range:
+    """Python representation for a PostgreSQL |range|_ type.
+
+    :param lower: lower bound for the range. `!None` means unbound
+    :param upper: upper bound for the range. `!None` means unbound
+    :param bounds: one of the literal strings ``()``, ``[)``, ``(]``, ``[]``,
+        representing whether the lower or upper bounds are included
+    :param empty: if `!True`, the range is empty
+
+    """
+    __slots__ = ('_lower', '_upper', '_bounds')
+
+    def __init__(self, lower=None, upper=None, bounds='[)', empty=False):
+        if not empty:
+            if bounds not in ('[)', '(]', '()', '[]'):
+                raise ValueError(f"bound flags not valid: {bounds!r}")
+
+            self._lower = lower
+            self._upper = upper
+            self._bounds = bounds
+        else:
+            self._lower = self._upper = self._bounds = None
+
+    def __repr__(self):
+        if self._bounds is None:
+            return f"{self.__class__.__name__}(empty=True)"
+        else:
+            return "{}({!r}, {!r}, {!r})".format(self.__class__.__name__,
+                self._lower, self._upper, self._bounds)
+
+    def __str__(self):
+        if self._bounds is None:
+            return 'empty'
+
+        items = [
+            self._bounds[0],
+            str(self._lower),
+            ', ',
+            str(self._upper),
+            self._bounds[1]
+        ]
+        return ''.join(items)
+
+    @property
+    def lower(self):
+        """The lower bound of the range. `!None` if empty or unbound."""
+        return self._lower
+
+    @property
+    def upper(self):
+        """The upper bound of the range. `!None` if empty or unbound."""
+        return self._upper
+
+    @property
+    def isempty(self):
+        """`!True` if the range is empty."""
+        return self._bounds is None
+
+    @property
+    def lower_inf(self):
+        """`!True` if the range doesn't have a lower bound."""
+        if self._bounds is None:
+            return False
+        return self._lower is None
+
+    @property
+    def upper_inf(self):
+        """`!True` if the range doesn't have an upper bound."""
+        if self._bounds is None:
+            return False
+        return self._upper is None
+
+    @property
+    def lower_inc(self):
+        """`!True` if the lower bound is included in the range."""
+        if self._bounds is None or self._lower is None:
+            return False
+        return self._bounds[0] == '['
+
+    @property
+    def upper_inc(self):
+        """`!True` if the upper bound is included in the range."""
+        if self._bounds is None or self._upper is None:
+            return False
+        return self._bounds[1] == ']'
+
+    def __contains__(self, x):
+        if self._bounds is None:
+            return False
+
+        if self._lower is not None:
+            if self._bounds[0] == '[':
+                if x < self._lower:
+                    return False
+            else:
+                if x <= self._lower:
+                    return False
+
+        if self._upper is not None:
+            if self._bounds[1] == ']':
+                if x > self._upper:
+                    return False
+            else:
+                if x >= self._upper:
+                    return False
+
+        return True
+
+    def __bool__(self):
+        return self._bounds is not None
+
+    def __nonzero__(self):
+        # Python 2 compatibility
+        return type(self).__bool__(self)
+
+    def __eq__(self, other):
+        if not isinstance(other, Range):
+            return False
+        return (self._lower == other._lower
+            and self._upper == other._upper
+            and self._bounds == other._bounds)
+
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
+    def __hash__(self):
+        return hash((self._lower, self._upper, self._bounds))
+
+    # as the postgres docs describe for the server-side stuff,
+    # ordering is rather arbitrary, but will remain stable
+    # and consistent.
+
+    def __lt__(self, other):
+        if not isinstance(other, Range):
+            return NotImplemented
+        for attr in ('_lower', '_upper', '_bounds'):
+            self_value = getattr(self, attr)
+            other_value = getattr(other, attr)
+            if self_value == other_value:
+                pass
+            elif self_value is None:
+                return True
+            elif other_value is None:
+                return False
+            else:
+                return self_value < other_value
+        return False
+
+    def __le__(self, other):
+        if self == other:
+            return True
+        else:
+            return self.__lt__(other)
+
+    def __gt__(self, other):
+        if isinstance(other, Range):
+            return other.__lt__(self)
+        else:
+            return NotImplemented
+
+    def __ge__(self, other):
+        if self == other:
+            return True
+        else:
+            return self.__gt__(other)
+
+    def __getstate__(self):
+        return {slot: getattr(self, slot)
+            for slot in self.__slots__ if hasattr(self, slot)}
+
+    def __setstate__(self, state):
+        for slot, value in state.items():
+            setattr(self, slot, value)
+
+
+def register_range(pgrange, pyrange, conn_or_curs, globally=False):
+    """Create and register an adapter and the typecasters to convert between
+    a PostgreSQL |range|_ type and a PostgreSQL `Range` subclass.
+
+    :param pgrange: the name of the PostgreSQL |range| type. Can be
+        schema-qualified
+    :param pyrange: a `Range` strict subclass, or just a name to give to a new
+        class
+    :param conn_or_curs: a connection or cursor used to find the oid of the
+        range and its subtype; the typecaster is registered in a scope limited
+        to this object, unless *globally* is set to `!True`
+    :param globally: if `!False` (default) register the typecaster only on
+        *conn_or_curs*, otherwise register it globally
+    :return: `RangeCaster` instance responsible for the conversion
+
+    If a string is passed to *pyrange*, a new `Range` subclass is created
+    with such name and will be available as the `~RangeCaster.range` attribute
+    of the returned `RangeCaster` object.
+
+    The function queries the database on *conn_or_curs* to inspect the
+    *pgrange* type and raises `~psycopg2.ProgrammingError` if the type is not
+    found.  If querying the database is not advisable, use directly the
+    `RangeCaster` class and register the adapter and typecasters using the
+    provided functions.
+
+    """
+    caster = RangeCaster._from_db(pgrange, pyrange, conn_or_curs)
+    caster._register(not globally and conn_or_curs or None)
+    return caster
+
+
+class RangeAdapter:
+    """`ISQLQuote` adapter for `Range` subclasses.
+
+    This is an abstract class: concrete classes must set a `name` class
+    attribute or override `getquoted()`.
+    """
+    name = None
+
+    def __init__(self, adapted):
+        self.adapted = adapted
+
+    def __conform__(self, proto):
+        if self._proto is ISQLQuote:
+            return self
+
+    def prepare(self, conn):
+        self._conn = conn
+
+    def getquoted(self):
+        if self.name is None:
+            raise NotImplementedError(
+                'RangeAdapter must be subclassed overriding its name '
+                'or the getquoted() method')
+
+        r = self.adapted
+        if r.isempty:
+            return b"'empty'::" + self.name.encode('utf8')
+
+        if r.lower is not None:
+            a = adapt(r.lower)
+            if hasattr(a, 'prepare'):
+                a.prepare(self._conn)
+            lower = a.getquoted()
+        else:
+            lower = b'NULL'
+
+        if r.upper is not None:
+            a = adapt(r.upper)
+            if hasattr(a, 'prepare'):
+                a.prepare(self._conn)
+            upper = a.getquoted()
+        else:
+            upper = b'NULL'
+
+        return self.name.encode('utf8') + b'(' + lower + b', ' + upper \
+            + b", '" + r._bounds.encode('utf8') + b"')"
+
+
+class RangeCaster:
+    """Helper class to convert between `Range` and PostgreSQL range types.
+
+    Objects of this class are usually created by `register_range()`. Manual
+    creation could be useful if querying the database is not advisable: in
+    this case the oids must be provided.
+    """
+    def __init__(self, pgrange, pyrange, oid, subtype_oid, array_oid=None):
+        self.subtype_oid = subtype_oid
+        self._create_ranges(pgrange, pyrange)
+
+        name = self.adapter.name or self.adapter.__class__.__name__
+
+        self.typecaster = new_type((oid,), name, self.parse)
+
+        if array_oid is not None:
+            self.array_typecaster = new_array_type(
+                (array_oid,), name + "ARRAY", self.typecaster)
+        else:
+            self.array_typecaster = None
+
+    def _create_ranges(self, pgrange, pyrange):
+        """Create Range and RangeAdapter classes if needed."""
+        # if got a string create a new RangeAdapter concrete type (with a name)
+        # else take it as an adapter. Passing an adapter should be considered
+        # an implementation detail and is not documented. It is currently used
+        # for the numeric ranges.
+        self.adapter = None
+        if isinstance(pgrange, str):
+            self.adapter = type(pgrange, (RangeAdapter,), {})
+            self.adapter.name = pgrange
+        else:
+            try:
+                if issubclass(pgrange, RangeAdapter) \
+                        and pgrange is not RangeAdapter:
+                    self.adapter = pgrange
+            except TypeError:
+                pass
+
+        if self.adapter is None:
+            raise TypeError(
+                'pgrange must be a string or a RangeAdapter strict subclass')
+
+        self.range = None
+        try:
+            if isinstance(pyrange, str):
+                self.range = type(pyrange, (Range,), {})
+            if issubclass(pyrange, Range) and pyrange is not Range:
+                self.range = pyrange
+        except TypeError:
+            pass
+
+        if self.range is None:
+            raise TypeError(
+                'pyrange must be a type or a Range strict subclass')
+
+    @classmethod
+    def _from_db(self, name, pyrange, conn_or_curs):
+        """Return a `RangeCaster` instance for the type *pgrange*.
+
+        Raise `ProgrammingError` if the type is not found.
+        """
+        from psycopg2.extensions import STATUS_IN_TRANSACTION
+        from psycopg2.extras import _solve_conn_curs
+        conn, curs = _solve_conn_curs(conn_or_curs)
+
+        if conn.info.server_version < 90200:
+            raise ProgrammingError("range types not available in version %s"
+                % conn.info.server_version)
+
+        # Store the transaction status of the connection to revert it after use
+        conn_status = conn.status
+
+        # Use the correct schema
+        if '.' in name:
+            schema, tname = name.split('.', 1)
+        else:
+            tname = name
+            schema = 'public'
+
+        # get the type oid and attributes
+        try:
+            curs.execute("""\
+select rngtypid, rngsubtype,
+    (select typarray from pg_type where oid = rngtypid)
+from pg_range r
+join pg_type t on t.oid = rngtypid
+join pg_namespace ns on ns.oid = typnamespace
+where typname = %s and ns.nspname = %s;
+""", (tname, schema))
+
+        except ProgrammingError:
+            if not conn.autocommit:
+                conn.rollback()
+            raise
+        else:
+            rec = curs.fetchone()
+
+            # revert the status of the connection as before the command
+            if (conn_status != STATUS_IN_TRANSACTION
+            and not conn.autocommit):
+                conn.rollback()
+
+        if not rec:
+            raise ProgrammingError(
+                f"PostgreSQL type '{name}' not found")
+
+        type, subtype, array = rec
+
+        return RangeCaster(name, pyrange,
+            oid=type, subtype_oid=subtype, array_oid=array)
+
+    _re_range = re.compile(r"""
+        ( \(|\[ )                   # lower bound flag
+        (?:                         # lower bound:
+          " ( (?: [^"] | "")* ) "   #   - a quoted string
+          | ( [^",]+ )              #   - or an unquoted string
+        )?                          #   - or empty (not catched)
+        ,
+        (?:                         # upper bound:
+          " ( (?: [^"] | "")* ) "   #   - a quoted string
+          | ( [^"\)\]]+ )           #   - or an unquoted string
+        )?                          #   - or empty (not catched)
+        ( \)|\] )                   # upper bound flag
+        """, re.VERBOSE)
+
+    _re_undouble = re.compile(r'(["\\])\1')
+
+    def parse(self, s, cur=None):
+        if s is None:
+            return None
+
+        if s == 'empty':
+            return self.range(empty=True)
+
+        m = self._re_range.match(s)
+        if m is None:
+            raise InterfaceError(f"failed to parse range: '{s}'")
+
+        lower = m.group(3)
+        if lower is None:
+            lower = m.group(2)
+            if lower is not None:
+                lower = self._re_undouble.sub(r"\1", lower)
+
+        upper = m.group(5)
+        if upper is None:
+            upper = m.group(4)
+            if upper is not None:
+                upper = self._re_undouble.sub(r"\1", upper)
+
+        if cur is not None:
+            lower = cur.cast(self.subtype_oid, lower)
+            upper = cur.cast(self.subtype_oid, upper)
+
+        bounds = m.group(1) + m.group(6)
+
+        return self.range(lower, upper, bounds)
+
+    def _register(self, scope=None):
+        register_type(self.typecaster, scope)
+        if self.array_typecaster is not None:
+            register_type(self.array_typecaster, scope)
+
+        register_adapter(self.range, self.adapter)
+
+
+class NumericRange(Range):
+    """A `Range` suitable to pass Python numeric types to a PostgreSQL range.
+
+    PostgreSQL types :sql:`int4range`, :sql:`int8range`, :sql:`numrange` are
+    casted into `!NumericRange` instances.
+    """
+    pass
+
+
+class DateRange(Range):
+    """Represents :sql:`daterange` values."""
+    pass
+
+
+class DateTimeRange(Range):
+    """Represents :sql:`tsrange` values."""
+    pass
+
+
+class DateTimeTZRange(Range):
+    """Represents :sql:`tstzrange` values."""
+    pass
+
+
+# Special adaptation for NumericRange. Allows to pass number range regardless
+# of whether they are ints, floats and what size of ints are, which are
+# pointless in Python world. On the way back, no numeric range is casted to
+# NumericRange, but only to their subclasses
+
+class NumberRangeAdapter(RangeAdapter):
+    """Adapt a range if the subtype doesn't need quotes."""
+    def getquoted(self):
+        r = self.adapted
+        if r.isempty:
+            return b"'empty'"
+
+        if not r.lower_inf:
+            # not exactly: we are relying that none of these object is really
+            # quoted (they are numbers). Also, I'm lazy and not preparing the
+            # adapter because I assume encoding doesn't matter for these
+            # objects.
+            lower = adapt(r.lower).getquoted().decode('ascii')
+        else:
+            lower = ''
+
+        if not r.upper_inf:
+            upper = adapt(r.upper).getquoted().decode('ascii')
+        else:
+            upper = ''
+
+        return (f"'{r._bounds[0]}{lower},{upper}{r._bounds[1]}'").encode('ascii')
+
+
+# TODO: probably won't work with infs, nans and other tricky cases.
+register_adapter(NumericRange, NumberRangeAdapter)
+
+# Register globally typecasters and adapters for builtin range types.
+
+# note: the adapter is registered more than once, but this is harmless.
+int4range_caster = RangeCaster(NumberRangeAdapter, NumericRange,
+    oid=3904, subtype_oid=23, array_oid=3905)
+int4range_caster._register()
+
+int8range_caster = RangeCaster(NumberRangeAdapter, NumericRange,
+    oid=3926, subtype_oid=20, array_oid=3927)
+int8range_caster._register()
+
+numrange_caster = RangeCaster(NumberRangeAdapter, NumericRange,
+    oid=3906, subtype_oid=1700, array_oid=3907)
+numrange_caster._register()
+
+daterange_caster = RangeCaster('daterange', DateRange,
+    oid=3912, subtype_oid=1082, array_oid=3913)
+daterange_caster._register()
+
+tsrange_caster = RangeCaster('tsrange', DateTimeRange,
+    oid=3908, subtype_oid=1114, array_oid=3909)
+tsrange_caster._register()
+
+tstzrange_caster = RangeCaster('tstzrange', DateTimeTZRange,
+    oid=3910, subtype_oid=1184, array_oid=3911)
+tstzrange_caster._register()

psycopg2/errorcodes.py

@@ -0,0 +1,447 @@
+"""Error codes for PostgreSQL
+
+This module contains symbolic names for all PostgreSQL error codes.
+"""
+# psycopg2/errorcodes.py - PostgreSQL error codes
+#
+# Copyright (C) 2006-2019 Johan Dahlin  <jdahlin@async.com.br>
+# 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.
+#
+# Based on:
+#
+#   https://www.postgresql.org/docs/current/static/errcodes-appendix.html
+#
+
+
+def lookup(code, _cache={}):
+    """Lookup an error code or class code and return its symbolic name.
+
+    Raise `KeyError` if the code is not found.
+    """
+    if _cache:
+        return _cache[code]
+
+    # Generate the lookup map at first usage.
+    tmp = {}
+    for k, v in globals().items():
+        if isinstance(v, str) and len(v) in (2, 5):
+            # Strip trailing underscore used to disambiguate duplicate values
+            tmp[v] = k.rstrip("_")
+
+    assert tmp
+
+    # Atomic update, to avoid race condition on import (bug #382)
+    _cache.update(tmp)
+
+    return _cache[code]
+
+
+# autogenerated data: do not edit below this point.
+
+# Error classes
+CLASS_SUCCESSFUL_COMPLETION = '00'
+CLASS_WARNING = '01'
+CLASS_NO_DATA = '02'
+CLASS_SQL_STATEMENT_NOT_YET_COMPLETE = '03'
+CLASS_CONNECTION_EXCEPTION = '08'
+CLASS_TRIGGERED_ACTION_EXCEPTION = '09'
+CLASS_FEATURE_NOT_SUPPORTED = '0A'
+CLASS_INVALID_TRANSACTION_INITIATION = '0B'
+CLASS_LOCATOR_EXCEPTION = '0F'
+CLASS_INVALID_GRANTOR = '0L'
+CLASS_INVALID_ROLE_SPECIFICATION = '0P'
+CLASS_DIAGNOSTICS_EXCEPTION = '0Z'
+CLASS_CASE_NOT_FOUND = '20'
+CLASS_CARDINALITY_VIOLATION = '21'
+CLASS_DATA_EXCEPTION = '22'
+CLASS_INTEGRITY_CONSTRAINT_VIOLATION = '23'
+CLASS_INVALID_CURSOR_STATE = '24'
+CLASS_INVALID_TRANSACTION_STATE = '25'
+CLASS_INVALID_SQL_STATEMENT_NAME = '26'
+CLASS_TRIGGERED_DATA_CHANGE_VIOLATION = '27'
+CLASS_INVALID_AUTHORIZATION_SPECIFICATION = '28'
+CLASS_DEPENDENT_PRIVILEGE_DESCRIPTORS_STILL_EXIST = '2B'
+CLASS_INVALID_TRANSACTION_TERMINATION = '2D'
+CLASS_SQL_ROUTINE_EXCEPTION = '2F'
+CLASS_INVALID_CURSOR_NAME = '34'
+CLASS_EXTERNAL_ROUTINE_EXCEPTION = '38'
+CLASS_EXTERNAL_ROUTINE_INVOCATION_EXCEPTION = '39'
+CLASS_SAVEPOINT_EXCEPTION = '3B'
+CLASS_INVALID_CATALOG_NAME = '3D'
+CLASS_INVALID_SCHEMA_NAME = '3F'
+CLASS_TRANSACTION_ROLLBACK = '40'
+CLASS_SYNTAX_ERROR_OR_ACCESS_RULE_VIOLATION = '42'
+CLASS_WITH_CHECK_OPTION_VIOLATION = '44'
+CLASS_INSUFFICIENT_RESOURCES = '53'
+CLASS_PROGRAM_LIMIT_EXCEEDED = '54'
+CLASS_OBJECT_NOT_IN_PREREQUISITE_STATE = '55'
+CLASS_OPERATOR_INTERVENTION = '57'
+CLASS_SYSTEM_ERROR = '58'
+CLASS_SNAPSHOT_FAILURE = '72'
+CLASS_CONFIGURATION_FILE_ERROR = 'F0'
+CLASS_FOREIGN_DATA_WRAPPER_ERROR = 'HV'
+CLASS_PL_PGSQL_ERROR = 'P0'
+CLASS_INTERNAL_ERROR = 'XX'
+
+# Class 00 - Successful Completion
+SUCCESSFUL_COMPLETION = '00000'
+
+# Class 01 - Warning
+WARNING = '01000'
+NULL_VALUE_ELIMINATED_IN_SET_FUNCTION = '01003'
+STRING_DATA_RIGHT_TRUNCATION_ = '01004'
+PRIVILEGE_NOT_REVOKED = '01006'
+PRIVILEGE_NOT_GRANTED = '01007'
+IMPLICIT_ZERO_BIT_PADDING = '01008'
+DYNAMIC_RESULT_SETS_RETURNED = '0100C'
+DEPRECATED_FEATURE = '01P01'
+
+# Class 02 - No Data (this is also a warning class per the SQL standard)
+NO_DATA = '02000'
+NO_ADDITIONAL_DYNAMIC_RESULT_SETS_RETURNED = '02001'
+
+# Class 03 - SQL Statement Not Yet Complete
+SQL_STATEMENT_NOT_YET_COMPLETE = '03000'
+
+# Class 08 - Connection Exception
+CONNECTION_EXCEPTION = '08000'
+SQLCLIENT_UNABLE_TO_ESTABLISH_SQLCONNECTION = '08001'
+CONNECTION_DOES_NOT_EXIST = '08003'
+SQLSERVER_REJECTED_ESTABLISHMENT_OF_SQLCONNECTION = '08004'
+CONNECTION_FAILURE = '08006'
+TRANSACTION_RESOLUTION_UNKNOWN = '08007'
+PROTOCOL_VIOLATION = '08P01'
+
+# Class 09 - Triggered Action Exception
+TRIGGERED_ACTION_EXCEPTION = '09000'
+
+# Class 0A - Feature Not Supported
+FEATURE_NOT_SUPPORTED = '0A000'
+
+# Class 0B - Invalid Transaction Initiation
+INVALID_TRANSACTION_INITIATION = '0B000'
+
+# Class 0F - Locator Exception
+LOCATOR_EXCEPTION = '0F000'
+INVALID_LOCATOR_SPECIFICATION = '0F001'
+
+# Class 0L - Invalid Grantor
+INVALID_GRANTOR = '0L000'
+INVALID_GRANT_OPERATION = '0LP01'
+
+# Class 0P - Invalid Role Specification
+INVALID_ROLE_SPECIFICATION = '0P000'
+
+# Class 0Z - Diagnostics Exception
+DIAGNOSTICS_EXCEPTION = '0Z000'
+STACKED_DIAGNOSTICS_ACCESSED_WITHOUT_ACTIVE_HANDLER = '0Z002'
+
+# Class 20 - Case Not Found
+CASE_NOT_FOUND = '20000'
+
+# Class 21 - Cardinality Violation
+CARDINALITY_VIOLATION = '21000'
+
+# Class 22 - Data Exception
+DATA_EXCEPTION = '22000'
+STRING_DATA_RIGHT_TRUNCATION = '22001'
+NULL_VALUE_NO_INDICATOR_PARAMETER = '22002'
+NUMERIC_VALUE_OUT_OF_RANGE = '22003'
+NULL_VALUE_NOT_ALLOWED_ = '22004'
+ERROR_IN_ASSIGNMENT = '22005'
+INVALID_DATETIME_FORMAT = '22007'
+DATETIME_FIELD_OVERFLOW = '22008'
+INVALID_TIME_ZONE_DISPLACEMENT_VALUE = '22009'
+ESCAPE_CHARACTER_CONFLICT = '2200B'
+INVALID_USE_OF_ESCAPE_CHARACTER = '2200C'
+INVALID_ESCAPE_OCTET = '2200D'
+ZERO_LENGTH_CHARACTER_STRING = '2200F'
+MOST_SPECIFIC_TYPE_MISMATCH = '2200G'
+SEQUENCE_GENERATOR_LIMIT_EXCEEDED = '2200H'
+NOT_AN_XML_DOCUMENT = '2200L'
+INVALID_XML_DOCUMENT = '2200M'
+INVALID_XML_CONTENT = '2200N'
+INVALID_XML_COMMENT = '2200S'
+INVALID_XML_PROCESSING_INSTRUCTION = '2200T'
+INVALID_INDICATOR_PARAMETER_VALUE = '22010'
+SUBSTRING_ERROR = '22011'
+DIVISION_BY_ZERO = '22012'
+INVALID_PRECEDING_OR_FOLLOWING_SIZE = '22013'
+INVALID_ARGUMENT_FOR_NTILE_FUNCTION = '22014'
+INTERVAL_FIELD_OVERFLOW = '22015'
+INVALID_ARGUMENT_FOR_NTH_VALUE_FUNCTION = '22016'
+INVALID_CHARACTER_VALUE_FOR_CAST = '22018'
+INVALID_ESCAPE_CHARACTER = '22019'
+INVALID_REGULAR_EXPRESSION = '2201B'
+INVALID_ARGUMENT_FOR_LOGARITHM = '2201E'
+INVALID_ARGUMENT_FOR_POWER_FUNCTION = '2201F'
+INVALID_ARGUMENT_FOR_WIDTH_BUCKET_FUNCTION = '2201G'
+INVALID_ROW_COUNT_IN_LIMIT_CLAUSE = '2201W'
+INVALID_ROW_COUNT_IN_RESULT_OFFSET_CLAUSE = '2201X'
+INVALID_LIMIT_VALUE = '22020'
+CHARACTER_NOT_IN_REPERTOIRE = '22021'
+INDICATOR_OVERFLOW = '22022'
+INVALID_PARAMETER_VALUE = '22023'
+UNTERMINATED_C_STRING = '22024'
+INVALID_ESCAPE_SEQUENCE = '22025'
+STRING_DATA_LENGTH_MISMATCH = '22026'
+TRIM_ERROR = '22027'
+ARRAY_SUBSCRIPT_ERROR = '2202E'
+INVALID_TABLESAMPLE_REPEAT = '2202G'
+INVALID_TABLESAMPLE_ARGUMENT = '2202H'
+DUPLICATE_JSON_OBJECT_KEY_VALUE = '22030'
+INVALID_ARGUMENT_FOR_SQL_JSON_DATETIME_FUNCTION = '22031'
+INVALID_JSON_TEXT = '22032'
+INVALID_SQL_JSON_SUBSCRIPT = '22033'
+MORE_THAN_ONE_SQL_JSON_ITEM = '22034'
+NO_SQL_JSON_ITEM = '22035'
+NON_NUMERIC_SQL_JSON_ITEM = '22036'
+NON_UNIQUE_KEYS_IN_A_JSON_OBJECT = '22037'
+SINGLETON_SQL_JSON_ITEM_REQUIRED = '22038'
+SQL_JSON_ARRAY_NOT_FOUND = '22039'
+SQL_JSON_MEMBER_NOT_FOUND = '2203A'
+SQL_JSON_NUMBER_NOT_FOUND = '2203B'
+SQL_JSON_OBJECT_NOT_FOUND = '2203C'
+TOO_MANY_JSON_ARRAY_ELEMENTS = '2203D'
+TOO_MANY_JSON_OBJECT_MEMBERS = '2203E'
+SQL_JSON_SCALAR_REQUIRED = '2203F'
+FLOATING_POINT_EXCEPTION = '22P01'
+INVALID_TEXT_REPRESENTATION = '22P02'
+INVALID_BINARY_REPRESENTATION = '22P03'
+BAD_COPY_FILE_FORMAT = '22P04'
+UNTRANSLATABLE_CHARACTER = '22P05'
+NONSTANDARD_USE_OF_ESCAPE_CHARACTER = '22P06'
+
+# Class 23 - Integrity Constraint Violation
+INTEGRITY_CONSTRAINT_VIOLATION = '23000'
+RESTRICT_VIOLATION = '23001'
+NOT_NULL_VIOLATION = '23502'
+FOREIGN_KEY_VIOLATION = '23503'
+UNIQUE_VIOLATION = '23505'
+CHECK_VIOLATION = '23514'
+EXCLUSION_VIOLATION = '23P01'
+
+# Class 24 - Invalid Cursor State
+INVALID_CURSOR_STATE = '24000'
+
+# Class 25 - Invalid Transaction State
+INVALID_TRANSACTION_STATE = '25000'
+ACTIVE_SQL_TRANSACTION = '25001'
+BRANCH_TRANSACTION_ALREADY_ACTIVE = '25002'
+INAPPROPRIATE_ACCESS_MODE_FOR_BRANCH_TRANSACTION = '25003'
+INAPPROPRIATE_ISOLATION_LEVEL_FOR_BRANCH_TRANSACTION = '25004'
+NO_ACTIVE_SQL_TRANSACTION_FOR_BRANCH_TRANSACTION = '25005'
+READ_ONLY_SQL_TRANSACTION = '25006'
+SCHEMA_AND_DATA_STATEMENT_MIXING_NOT_SUPPORTED = '25007'
+HELD_CURSOR_REQUIRES_SAME_ISOLATION_LEVEL = '25008'
+NO_ACTIVE_SQL_TRANSACTION = '25P01'
+IN_FAILED_SQL_TRANSACTION = '25P02'
+IDLE_IN_TRANSACTION_SESSION_TIMEOUT = '25P03'
+
+# Class 26 - Invalid SQL Statement Name
+INVALID_SQL_STATEMENT_NAME = '26000'
+
+# Class 27 - Triggered Data Change Violation
+TRIGGERED_DATA_CHANGE_VIOLATION = '27000'
+
+# Class 28 - Invalid Authorization Specification
+INVALID_AUTHORIZATION_SPECIFICATION = '28000'
+INVALID_PASSWORD = '28P01'
+
+# Class 2B - Dependent Privilege Descriptors Still Exist
+DEPENDENT_PRIVILEGE_DESCRIPTORS_STILL_EXIST = '2B000'
+DEPENDENT_OBJECTS_STILL_EXIST = '2BP01'
+
+# Class 2D - Invalid Transaction Termination
+INVALID_TRANSACTION_TERMINATION = '2D000'
+
+# Class 2F - SQL Routine Exception
+SQL_ROUTINE_EXCEPTION = '2F000'
+MODIFYING_SQL_DATA_NOT_PERMITTED_ = '2F002'
+PROHIBITED_SQL_STATEMENT_ATTEMPTED_ = '2F003'
+READING_SQL_DATA_NOT_PERMITTED_ = '2F004'
+FUNCTION_EXECUTED_NO_RETURN_STATEMENT = '2F005'
+
+# Class 34 - Invalid Cursor Name
+INVALID_CURSOR_NAME = '34000'
+
+# Class 38 - External Routine Exception
+EXTERNAL_ROUTINE_EXCEPTION = '38000'
+CONTAINING_SQL_NOT_PERMITTED = '38001'
+MODIFYING_SQL_DATA_NOT_PERMITTED = '38002'
+PROHIBITED_SQL_STATEMENT_ATTEMPTED = '38003'
+READING_SQL_DATA_NOT_PERMITTED = '38004'
+
+# Class 39 - External Routine Invocation Exception
+EXTERNAL_ROUTINE_INVOCATION_EXCEPTION = '39000'
+INVALID_SQLSTATE_RETURNED = '39001'
+NULL_VALUE_NOT_ALLOWED = '39004'
+TRIGGER_PROTOCOL_VIOLATED = '39P01'
+SRF_PROTOCOL_VIOLATED = '39P02'
+EVENT_TRIGGER_PROTOCOL_VIOLATED = '39P03'
+
+# Class 3B - Savepoint Exception
+SAVEPOINT_EXCEPTION = '3B000'
+INVALID_SAVEPOINT_SPECIFICATION = '3B001'
+
+# Class 3D - Invalid Catalog Name
+INVALID_CATALOG_NAME = '3D000'
+
+# Class 3F - Invalid Schema Name
+INVALID_SCHEMA_NAME = '3F000'
+
+# Class 40 - Transaction Rollback
+TRANSACTION_ROLLBACK = '40000'
+SERIALIZATION_FAILURE = '40001'
+TRANSACTION_INTEGRITY_CONSTRAINT_VIOLATION = '40002'
+STATEMENT_COMPLETION_UNKNOWN = '40003'
+DEADLOCK_DETECTED = '40P01'
+
+# Class 42 - Syntax Error or Access Rule Violation
+SYNTAX_ERROR_OR_ACCESS_RULE_VIOLATION = '42000'
+INSUFFICIENT_PRIVILEGE = '42501'
+SYNTAX_ERROR = '42601'
+INVALID_NAME = '42602'
+INVALID_COLUMN_DEFINITION = '42611'
+NAME_TOO_LONG = '42622'
+DUPLICATE_COLUMN = '42701'
+AMBIGUOUS_COLUMN = '42702'
+UNDEFINED_COLUMN = '42703'
+UNDEFINED_OBJECT = '42704'
+DUPLICATE_OBJECT = '42710'
+DUPLICATE_ALIAS = '42712'
+DUPLICATE_FUNCTION = '42723'
+AMBIGUOUS_FUNCTION = '42725'
+GROUPING_ERROR = '42803'
+DATATYPE_MISMATCH = '42804'
+WRONG_OBJECT_TYPE = '42809'
+INVALID_FOREIGN_KEY = '42830'
+CANNOT_COERCE = '42846'
+UNDEFINED_FUNCTION = '42883'
+GENERATED_ALWAYS = '428C9'
+RESERVED_NAME = '42939'
+UNDEFINED_TABLE = '42P01'
+UNDEFINED_PARAMETER = '42P02'
+DUPLICATE_CURSOR = '42P03'
+DUPLICATE_DATABASE = '42P04'
+DUPLICATE_PREPARED_STATEMENT = '42P05'
+DUPLICATE_SCHEMA = '42P06'
+DUPLICATE_TABLE = '42P07'
+AMBIGUOUS_PARAMETER = '42P08'
+AMBIGUOUS_ALIAS = '42P09'
+INVALID_COLUMN_REFERENCE = '42P10'
+INVALID_CURSOR_DEFINITION = '42P11'
+INVALID_DATABASE_DEFINITION = '42P12'
+INVALID_FUNCTION_DEFINITION = '42P13'
+INVALID_PREPARED_STATEMENT_DEFINITION = '42P14'
+INVALID_SCHEMA_DEFINITION = '42P15'
+INVALID_TABLE_DEFINITION = '42P16'
+INVALID_OBJECT_DEFINITION = '42P17'
+INDETERMINATE_DATATYPE = '42P18'
+INVALID_RECURSION = '42P19'
+WINDOWING_ERROR = '42P20'
+COLLATION_MISMATCH = '42P21'
+INDETERMINATE_COLLATION = '42P22'
+
+# Class 44 - WITH CHECK OPTION Violation
+WITH_CHECK_OPTION_VIOLATION = '44000'
+
+# Class 53 - Insufficient Resources
+INSUFFICIENT_RESOURCES = '53000'
+DISK_FULL = '53100'
+OUT_OF_MEMORY = '53200'
+TOO_MANY_CONNECTIONS = '53300'
+CONFIGURATION_LIMIT_EXCEEDED = '53400'
+
+# Class 54 - Program Limit Exceeded
+PROGRAM_LIMIT_EXCEEDED = '54000'
+STATEMENT_TOO_COMPLEX = '54001'
+TOO_MANY_COLUMNS = '54011'
+TOO_MANY_ARGUMENTS = '54023'
+
+# Class 55 - Object Not In Prerequisite State
+OBJECT_NOT_IN_PREREQUISITE_STATE = '55000'
+OBJECT_IN_USE = '55006'
+CANT_CHANGE_RUNTIME_PARAM = '55P02'
+LOCK_NOT_AVAILABLE = '55P03'
+UNSAFE_NEW_ENUM_VALUE_USAGE = '55P04'
+
+# Class 57 - Operator Intervention
+OPERATOR_INTERVENTION = '57000'
+QUERY_CANCELED = '57014'
+ADMIN_SHUTDOWN = '57P01'
+CRASH_SHUTDOWN = '57P02'
+CANNOT_CONNECT_NOW = '57P03'
+DATABASE_DROPPED = '57P04'
+
+# Class 58 - System Error (errors external to PostgreSQL itself)
+SYSTEM_ERROR = '58000'
+IO_ERROR = '58030'
+UNDEFINED_FILE = '58P01'
+DUPLICATE_FILE = '58P02'
+
+# Class 72 - Snapshot Failure
+SNAPSHOT_TOO_OLD = '72000'
+
+# Class F0 - Configuration File Error
+CONFIG_FILE_ERROR = 'F0000'
+LOCK_FILE_EXISTS = 'F0001'
+
+# Class HV - Foreign Data Wrapper Error (SQL/MED)
+FDW_ERROR = 'HV000'
+FDW_OUT_OF_MEMORY = 'HV001'
+FDW_DYNAMIC_PARAMETER_VALUE_NEEDED = 'HV002'
+FDW_INVALID_DATA_TYPE = 'HV004'
+FDW_COLUMN_NAME_NOT_FOUND = 'HV005'
+FDW_INVALID_DATA_TYPE_DESCRIPTORS = 'HV006'
+FDW_INVALID_COLUMN_NAME = 'HV007'
+FDW_INVALID_COLUMN_NUMBER = 'HV008'
+FDW_INVALID_USE_OF_NULL_POINTER = 'HV009'
+FDW_INVALID_STRING_FORMAT = 'HV00A'
+FDW_INVALID_HANDLE = 'HV00B'
+FDW_INVALID_OPTION_INDEX = 'HV00C'
+FDW_INVALID_OPTION_NAME = 'HV00D'
+FDW_OPTION_NAME_NOT_FOUND = 'HV00J'
+FDW_REPLY_HANDLE = 'HV00K'
+FDW_UNABLE_TO_CREATE_EXECUTION = 'HV00L'
+FDW_UNABLE_TO_CREATE_REPLY = 'HV00M'
+FDW_UNABLE_TO_ESTABLISH_CONNECTION = 'HV00N'
+FDW_NO_SCHEMAS = 'HV00P'
+FDW_SCHEMA_NOT_FOUND = 'HV00Q'
+FDW_TABLE_NOT_FOUND = 'HV00R'
+FDW_FUNCTION_SEQUENCE_ERROR = 'HV010'
+FDW_TOO_MANY_HANDLES = 'HV014'
+FDW_INCONSISTENT_DESCRIPTOR_INFORMATION = 'HV021'
+FDW_INVALID_ATTRIBUTE_VALUE = 'HV024'
+FDW_INVALID_STRING_LENGTH_OR_BUFFER_LENGTH = 'HV090'
+FDW_INVALID_DESCRIPTOR_FIELD_IDENTIFIER = 'HV091'
+
+# Class P0 - PL/pgSQL Error
+PLPGSQL_ERROR = 'P0000'
+RAISE_EXCEPTION = 'P0001'
+NO_DATA_FOUND = 'P0002'
+TOO_MANY_ROWS = 'P0003'
+ASSERT_FAILURE = 'P0004'
+
+# Class XX - Internal Error
+INTERNAL_ERROR = 'XX000'
+DATA_CORRUPTED = 'XX001'
+INDEX_CORRUPTED = 'XX002'

psycopg2/errors.py

@@ -0,0 +1,38 @@
+"""Error classes for PostgreSQL error codes
+"""
+
+# psycopg/errors.py - SQLSTATE and DB-API exceptions
+#
+# Copyright (C) 2018-2019 Daniele Varrazzo  <daniele.varrazzo@gmail.com>
+# 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.
+
+#
+# NOTE: the exceptions are injected into this module by the C extention.
+#
+
+
+def lookup(code):
+    """Lookup an error code and return its exception class.
+
+    Raise `!KeyError` if the code is not found.
+    """
+    from psycopg2._psycopg import sqlstate_errors   # avoid circular import
+    return sqlstate_errors[code]

psycopg2/extensions.py

@@ -0,0 +1,213 @@
+"""psycopg extensions to the DBAPI-2.0
+
+This module holds all the extensions to the DBAPI-2.0 provided by psycopg.
+
+- `connection` -- the new-type inheritable connection class
+- `cursor` -- the new-type inheritable cursor class
+- `lobject` -- the new-type inheritable large object class
+- `adapt()` -- exposes the PEP-246_ compatible adapting mechanism used
+  by psycopg to adapt Python types to PostgreSQL ones
+
+.. _PEP-246: https://www.python.org/dev/peps/pep-0246/
+"""
+# psycopg/extensions.py - DBAPI-2.0 extensions specific to psycopg
+#
+# 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 re as _re
+
+from psycopg2._psycopg import (                             # noqa
+    BINARYARRAY, BOOLEAN, BOOLEANARRAY, BYTES, BYTESARRAY, DATE, DATEARRAY,
+    DATETIMEARRAY, DECIMAL, DECIMALARRAY, FLOAT, FLOATARRAY, INTEGER,
+    INTEGERARRAY, INTERVAL, INTERVALARRAY, LONGINTEGER, LONGINTEGERARRAY,
+    ROWIDARRAY, STRINGARRAY, TIME, TIMEARRAY, UNICODE, UNICODEARRAY,
+    AsIs, Binary, Boolean, Float, Int, QuotedString, )
+
+from psycopg2._psycopg import (                         # noqa
+    PYDATE, PYDATETIME, PYDATETIMETZ, PYINTERVAL, PYTIME, PYDATEARRAY,
+    PYDATETIMEARRAY, PYDATETIMETZARRAY, PYINTERVALARRAY, PYTIMEARRAY,
+    DateFromPy, TimeFromPy, TimestampFromPy, IntervalFromPy, )
+
+from psycopg2._psycopg import (                             # noqa
+    adapt, adapters, encodings, connection, cursor,
+    lobject, Xid, libpq_version, parse_dsn, quote_ident,
+    string_types, binary_types, new_type, new_array_type, register_type,
+    ISQLQuote, Notify, Diagnostics, Column, ConnectionInfo,
+    QueryCanceledError, TransactionRollbackError,
+    set_wait_callback, get_wait_callback, encrypt_password, )
+
+
+"""Isolation level values."""
+ISOLATION_LEVEL_AUTOCOMMIT = 0
+ISOLATION_LEVEL_READ_UNCOMMITTED = 4
+ISOLATION_LEVEL_READ_COMMITTED = 1
+ISOLATION_LEVEL_REPEATABLE_READ = 2
+ISOLATION_LEVEL_SERIALIZABLE = 3
+ISOLATION_LEVEL_DEFAULT = None
+
+
+"""psycopg connection status values."""
+STATUS_SETUP = 0
+STATUS_READY = 1
+STATUS_BEGIN = 2
+STATUS_SYNC = 3  # currently unused
+STATUS_ASYNC = 4  # currently unused
+STATUS_PREPARED = 5
+
+# This is a useful mnemonic to check if the connection is in a transaction
+STATUS_IN_TRANSACTION = STATUS_BEGIN
+
+
+"""psycopg asynchronous connection polling values"""
+POLL_OK = 0
+POLL_READ = 1
+POLL_WRITE = 2
+POLL_ERROR = 3
+
+
+"""Backend transaction status values."""
+TRANSACTION_STATUS_IDLE = 0
+TRANSACTION_STATUS_ACTIVE = 1
+TRANSACTION_STATUS_INTRANS = 2
+TRANSACTION_STATUS_INERROR = 3
+TRANSACTION_STATUS_UNKNOWN = 4
+
+
+def register_adapter(typ, callable):
+    """Register 'callable' as an ISQLQuote adapter for type 'typ'."""
+    adapters[(typ, ISQLQuote)] = callable
+
+
+# The SQL_IN class is the official adapter for tuples starting from 2.0.6.
+class SQL_IN:
+    """Adapt any iterable to an SQL quotable object."""
+    def __init__(self, seq):
+        self._seq = seq
+        self._conn = None
+
+    def prepare(self, conn):
+        self._conn = conn
+
+    def getquoted(self):
+        # this is the important line: note how every object in the
+        # list is adapted and then how getquoted() is called on it
+        pobjs = [adapt(o) for o in self._seq]
+        if self._conn is not None:
+            for obj in pobjs:
+                if hasattr(obj, 'prepare'):
+                    obj.prepare(self._conn)
+        qobjs = [o.getquoted() for o in pobjs]
+        return b'(' + b', '.join(qobjs) + b')'
+
+    def __str__(self):
+        return str(self.getquoted())
+
+
+class NoneAdapter:
+    """Adapt None to NULL.
+
+    This adapter is not used normally as a fast path in mogrify uses NULL,
+    but it makes easier to adapt composite types.
+    """
+    def __init__(self, obj):
+        pass
+
+    def getquoted(self, _null=b"NULL"):
+        return _null
+
+
+def make_dsn(dsn=None, **kwargs):
+    """Convert a set of keywords into a connection strings."""
+    if dsn is None and not kwargs:
+        return ''
+
+    # If no kwarg is specified don't mung the dsn, but verify it
+    if not kwargs:
+        parse_dsn(dsn)
+        return dsn
+
+    # Override the dsn with the parameters
+    if 'database' in kwargs:
+        if 'dbname' in kwargs:
+            raise TypeError(
+                "you can't specify both 'database' and 'dbname' arguments")
+        kwargs['dbname'] = kwargs.pop('database')
+
+    # Drop the None arguments
+    kwargs = {k: v for (k, v) in kwargs.items() if v is not None}
+
+    if dsn is not None:
+        tmp = parse_dsn(dsn)
+        tmp.update(kwargs)
+        kwargs = tmp
+
+    dsn = " ".join(["{}={}".format(k, _param_escape(str(v)))
+        for (k, v) in kwargs.items()])
+
+    # verify that the returned dsn is valid
+    parse_dsn(dsn)
+
+    return dsn
+
+
+def _param_escape(s,
+        re_escape=_re.compile(r"([\\'])"),
+        re_space=_re.compile(r'\s')):
+    """
+    Apply the escaping rule required by PQconnectdb
+    """
+    if not s:
+        return "''"
+
+    s = re_escape.sub(r'\\\1', s)
+    if re_space.search(s):
+        s = "'" + s + "'"
+
+    return s
+
+
+# Create default json typecasters for PostgreSQL 9.2 oids
+from psycopg2._json import register_default_json, register_default_jsonb    # noqa
+
+try:
+    JSON, JSONARRAY = register_default_json()
+    JSONB, JSONBARRAY = register_default_jsonb()
+except ImportError:
+    pass
+
+del register_default_json, register_default_jsonb
+
+
+# Create default Range typecasters
+from psycopg2. _range import Range                              # noqa
+del Range
+
+
+# Add the "cleaned" version of the encodings to the key.
+# When the encoding is set its name is cleaned up from - and _ and turned
+# uppercase, so an encoding not respecting these rules wouldn't be found in the
+# encodings keys and would raise an exception with the unicode typecaster
+for k, v in list(encodings.items()):
+    k = k.replace('_', '').replace('-', '').upper()
+    encodings[k] = v
+
+del k, v

psycopg2/pool.py

@@ -0,0 +1,187 @@
+"""Connection pooling for psycopg2
+
+This module implements thread-safe (and not) connection pools.
+"""
+# psycopg/pool.py - pooling code for psycopg
+#
+# 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 psycopg2
+from psycopg2 import extensions as _ext
+
+
+class PoolError(psycopg2.Error):
+    pass
+
+
+class AbstractConnectionPool:
+    """Generic key-based pooling code."""
+
+    def __init__(self, minconn, maxconn, *args, **kwargs):
+        """Initialize the connection pool.
+
+        New 'minconn' connections are created immediately calling 'connfunc'
+        with given parameters. The connection pool will support a maximum of
+        about 'maxconn' connections.
+        """
+        self.minconn = int(minconn)
+        self.maxconn = int(maxconn)
+        self.closed = False
+
+        self._args = args
+        self._kwargs = kwargs
+
+        self._pool = []
+        self._used = {}
+        self._rused = {}    # id(conn) -> key map
+        self._keys = 0
+
+        for i in range(self.minconn):
+            self._connect()
+
+    def _connect(self, key=None):
+        """Create a new connection and assign it to 'key' if not None."""
+        conn = psycopg2.connect(*self._args, **self._kwargs)
+        if key is not None:
+            self._used[key] = conn
+            self._rused[id(conn)] = key
+        else:
+            self._pool.append(conn)
+        return conn
+
+    def _getkey(self):
+        """Return a new unique key."""
+        self._keys += 1
+        return self._keys
+
+    def _getconn(self, key=None):
+        """Get a free connection and assign it to 'key' if not None."""
+        if self.closed:
+            raise PoolError("connection pool is closed")
+        if key is None:
+            key = self._getkey()
+
+        if key in self._used:
+            return self._used[key]
+
+        if self._pool:
+            self._used[key] = conn = self._pool.pop()
+            self._rused[id(conn)] = key
+            return conn
+        else:
+            if len(self._used) == self.maxconn:
+                raise PoolError("connection pool exhausted")
+            return self._connect(key)
+
+    def _putconn(self, conn, key=None, close=False):
+        """Put away a connection."""
+        if self.closed:
+            raise PoolError("connection pool is closed")
+
+        if key is None:
+            key = self._rused.get(id(conn))
+            if key is None:
+                raise PoolError("trying to put unkeyed connection")
+
+        if len(self._pool) < self.minconn and not close:
+            # Return the connection into a consistent state before putting
+            # it back into the pool
+            if not conn.closed:
+                status = conn.info.transaction_status
+                if status == _ext.TRANSACTION_STATUS_UNKNOWN:
+                    # server connection lost
+                    conn.close()
+                elif status != _ext.TRANSACTION_STATUS_IDLE:
+                    # connection in error or in transaction
+                    conn.rollback()
+                    self._pool.append(conn)
+                else:
+                    # regular idle connection
+                    self._pool.append(conn)
+            # If the connection is closed, we just discard it.
+        else:
+            conn.close()
+
+        # here we check for the presence of key because it can happen that a
+        # thread tries to put back a connection after a call to close
+        if not self.closed or key in self._used:
+            del self._used[key]
+            del self._rused[id(conn)]
+
+    def _closeall(self):
+        """Close all connections.
+
+        Note that this can lead to some code fail badly when trying to use
+        an already closed connection. If you call .closeall() make sure
+        your code can deal with it.
+        """
+        if self.closed:
+            raise PoolError("connection pool is closed")
+        for conn in self._pool + list(self._used.values()):
+            try:
+                conn.close()
+            except Exception:
+                pass
+        self.closed = True
+
+
+class SimpleConnectionPool(AbstractConnectionPool):
+    """A connection pool that can't be shared across different threads."""
+
+    getconn = AbstractConnectionPool._getconn
+    putconn = AbstractConnectionPool._putconn
+    closeall = AbstractConnectionPool._closeall
+
+
+class ThreadedConnectionPool(AbstractConnectionPool):
+    """A connection pool that works with the threading module."""
+
+    def __init__(self, minconn, maxconn, *args, **kwargs):
+        """Initialize the threading lock."""
+        import threading
+        AbstractConnectionPool.__init__(
+            self, minconn, maxconn, *args, **kwargs)
+        self._lock = threading.Lock()
+
+    def getconn(self, key=None):
+        """Get a free connection and assign it to 'key' if not None."""
+        self._lock.acquire()
+        try:
+            return self._getconn(key)
+        finally:
+            self._lock.release()
+
+    def putconn(self, conn=None, key=None, close=False):
+        """Put away an unused connection."""
+        self._lock.acquire()
+        try:
+            self._putconn(conn, key, close)
+        finally:
+            self._lock.release()
+
+    def closeall(self):
+        """Close all connections (even the one currently in use.)"""
+        self._lock.acquire()
+        try:
+            self._closeall()
+        finally:
+            self._lock.release()

psycopg2/sql.py

@@ -0,0 +1,455 @@
+"""SQL composition utility module
+"""
+
+# psycopg/sql.py - SQL composition utility module
+#
+# Copyright (C) 2016-2019 Daniele Varrazzo  <daniele.varrazzo@gmail.com>
+# 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 string
+
+from psycopg2 import extensions as ext
+
+
+_formatter = string.Formatter()
+
+
+class Composable:
+    """
+    Abstract base class for objects that can be used to compose an SQL string.
+
+    `!Composable` objects can be passed directly to `~cursor.execute()`,
+    `~cursor.executemany()`, `~cursor.copy_expert()` in place of the query
+    string.
+
+    `!Composable` objects can be joined using the ``+`` operator: the result
+    will be a `Composed` instance containing the objects joined. The operator
+    ``*`` is also supported with an integer argument: the result is a
+    `!Composed` instance containing the left argument repeated as many times as
+    requested.
+    """
+    def __init__(self, wrapped):
+        self._wrapped = wrapped
+
+    def __repr__(self):
+        return f"{self.__class__.__name__}({self._wrapped!r})"
+
+    def as_string(self, context):
+        """
+        Return the string value of the object.
+
+        :param context: the context to evaluate the string into.
+        :type context: `connection` or `cursor`
+
+        The method is automatically invoked by `~cursor.execute()`,
+        `~cursor.executemany()`, `~cursor.copy_expert()` if a `!Composable` is
+        passed instead of the query string.
+        """
+        raise NotImplementedError
+
+    def __add__(self, other):
+        if isinstance(other, Composed):
+            return Composed([self]) + other
+        if isinstance(other, Composable):
+            return Composed([self]) + Composed([other])
+        else:
+            return NotImplemented
+
+    def __mul__(self, n):
+        return Composed([self] * n)
+
+    def __eq__(self, other):
+        return type(self) is type(other) and self._wrapped == other._wrapped
+
+    def __ne__(self, other):
+        return not self.__eq__(other)
+
+
+class Composed(Composable):
+    """
+    A `Composable` object made of a sequence of `!Composable`.
+
+    The object is usually created using `!Composable` operators and methods.
+    However it is possible to create a `!Composed` directly specifying a
+    sequence of `!Composable` as arguments.
+
+    Example::
+
+        >>> comp = sql.Composed(
+        ...     [sql.SQL("insert into "), sql.Identifier("table")])
+        >>> print(comp.as_string(conn))
+        insert into "table"
+
+    `!Composed` objects are iterable (so they can be used in `SQL.join` for
+    instance).
+    """
+    def __init__(self, seq):
+        wrapped = []
+        for i in seq:
+            if not isinstance(i, Composable):
+                raise TypeError(
+                    f"Composed elements must be Composable, got {i!r} instead")
+            wrapped.append(i)
+
+        super().__init__(wrapped)
+
+    @property
+    def seq(self):
+        """The list of the content of the `!Composed`."""
+        return list(self._wrapped)
+
+    def as_string(self, context):
+        rv = []
+        for i in self._wrapped:
+            rv.append(i.as_string(context))
+        return ''.join(rv)
+
+    def __iter__(self):
+        return iter(self._wrapped)
+
+    def __add__(self, other):
+        if isinstance(other, Composed):
+            return Composed(self._wrapped + other._wrapped)
+        if isinstance(other, Composable):
+            return Composed(self._wrapped + [other])
+        else:
+            return NotImplemented
+
+    def join(self, joiner):
+        """
+        Return a new `!Composed` interposing the *joiner* with the `!Composed` items.
+
+        The *joiner* must be a `SQL` or a string which will be interpreted as
+        an `SQL`.
+
+        Example::
+
+            >>> fields = sql.Identifier('foo') + sql.Identifier('bar')  # a Composed
+            >>> print(fields.join(', ').as_string(conn))
+            "foo", "bar"
+
+        """
+        if isinstance(joiner, str):
+            joiner = SQL(joiner)
+        elif not isinstance(joiner, SQL):
+            raise TypeError(
+                "Composed.join() argument must be a string or an SQL")
+
+        return joiner.join(self)
+
+
+class SQL(Composable):
+    """
+    A `Composable` representing a snippet of SQL statement.
+
+    `!SQL` exposes `join()` and `format()` methods useful to create a template
+    where to merge variable parts of a query (for instance field or table
+    names).
+
+    The *string* doesn't undergo any form of escaping, so it is not suitable to
+    represent variable identifiers or values: you should only use it to pass
+    constant strings representing templates or snippets of SQL statements; use
+    other objects such as `Identifier` or `Literal` to represent variable
+    parts.
+
+    Example::
+
+        >>> query = sql.SQL("select {0} from {1}").format(
+        ...    sql.SQL(', ').join([sql.Identifier('foo'), sql.Identifier('bar')]),
+        ...    sql.Identifier('table'))
+        >>> print(query.as_string(conn))
+        select "foo", "bar" from "table"
+    """
+    def __init__(self, string):
+        if not isinstance(string, str):
+            raise TypeError("SQL values must be strings")
+        super().__init__(string)
+
+    @property
+    def string(self):
+        """The string wrapped by the `!SQL` object."""
+        return self._wrapped
+
+    def as_string(self, context):
+        return self._wrapped
+
+    def format(self, *args, **kwargs):
+        """
+        Merge `Composable` objects into a template.
+
+        :param `Composable` args: parameters to replace to numbered
+            (``{0}``, ``{1}``) or auto-numbered (``{}``) placeholders
+        :param `Composable` kwargs: parameters to replace to named (``{name}``)
+            placeholders
+        :return: the union of the `!SQL` string with placeholders replaced
+        :rtype: `Composed`
+
+        The method is similar to the Python `str.format()` method: the string
+        template supports auto-numbered (``{}``), numbered (``{0}``,
+        ``{1}``...), and named placeholders (``{name}``), with positional
+        arguments replacing the numbered placeholders and keywords replacing
+        the named ones. However placeholder modifiers (``{0!r}``, ``{0:<10}``)
+        are not supported. Only `!Composable` objects can be passed to the
+        template.
+
+        Example::
+
+            >>> print(sql.SQL("select * from {} where {} = %s")
+            ...     .format(sql.Identifier('people'), sql.Identifier('id'))
+            ...     .as_string(conn))
+            select * from "people" where "id" = %s
+
+            >>> print(sql.SQL("select * from {tbl} where {pkey} = %s")
+            ...     .format(tbl=sql.Identifier('people'), pkey=sql.Identifier('id'))
+            ...     .as_string(conn))
+            select * from "people" where "id" = %s
+
+        """
+        rv = []
+        autonum = 0
+        for pre, name, spec, conv in _formatter.parse(self._wrapped):
+            if spec:
+                raise ValueError("no format specification supported by SQL")
+            if conv:
+                raise ValueError("no format conversion supported by SQL")
+            if pre:
+                rv.append(SQL(pre))
+
+            if name is None:
+                continue
+
+            if name.isdigit():
+                if autonum:
+                    raise ValueError(
+                        "cannot switch from automatic field numbering to manual")
+                rv.append(args[int(name)])
+                autonum = None
+
+            elif not name:
+                if autonum is None:
+                    raise ValueError(
+                        "cannot switch from manual field numbering to automatic")
+                rv.append(args[autonum])
+                autonum += 1
+
+            else:
+                rv.append(kwargs[name])
+
+        return Composed(rv)
+
+    def join(self, seq):
+        """
+        Join a sequence of `Composable`.
+
+        :param seq: the elements to join.
+        :type seq: iterable of `!Composable`
+
+        Use the `!SQL` object's *string* to separate the elements in *seq*.
+        Note that `Composed` objects are iterable too, so they can be used as
+        argument for this method.
+
+        Example::
+
+            >>> snip = sql.SQL(', ').join(
+            ...     sql.Identifier(n) for n in ['foo', 'bar', 'baz'])
+            >>> print(snip.as_string(conn))
+            "foo", "bar", "baz"
+        """
+        rv = []
+        it = iter(seq)
+        try:
+            rv.append(next(it))
+        except StopIteration:
+            pass
+        else:
+            for i in it:
+                rv.append(self)
+                rv.append(i)
+
+        return Composed(rv)
+
+
+class Identifier(Composable):
+    """
+    A `Composable` representing an SQL identifier or a dot-separated sequence.
+
+    Identifiers usually represent names of database objects, such as tables or
+    fields. PostgreSQL identifiers follow `different rules`__ than SQL string
+    literals for escaping (e.g. they use double quotes instead of single).
+
+    .. __: https://www.postgresql.org/docs/current/static/sql-syntax-lexical.html# \
+        SQL-SYNTAX-IDENTIFIERS
+
+    Example::
+
+        >>> t1 = sql.Identifier("foo")
+        >>> t2 = sql.Identifier("ba'r")
+        >>> t3 = sql.Identifier('ba"z')
+        >>> print(sql.SQL(', ').join([t1, t2, t3]).as_string(conn))
+        "foo", "ba'r", "ba""z"
+
+    Multiple strings can be passed to the object to represent a qualified name,
+    i.e. a dot-separated sequence of identifiers.
+
+    Example::
+
+        >>> query = sql.SQL("select {} from {}").format(
+        ...     sql.Identifier("table", "field"),
+        ...     sql.Identifier("schema", "table"))
+        >>> print(query.as_string(conn))
+        select "table"."field" from "schema"."table"
+
+    """
+    def __init__(self, *strings):
+        if not strings:
+            raise TypeError("Identifier cannot be empty")
+
+        for s in strings:
+            if not isinstance(s, str):
+                raise TypeError("SQL identifier parts must be strings")
+
+        super().__init__(strings)
+
+    @property
+    def strings(self):
+        """A tuple with the strings wrapped by the `Identifier`."""
+        return self._wrapped
+
+    @property
+    def string(self):
+        """The string wrapped by the `Identifier`.
+        """
+        if len(self._wrapped) == 1:
+            return self._wrapped[0]
+        else:
+            raise AttributeError(
+                "the Identifier wraps more than one than one string")
+
+    def __repr__(self):
+        return f"{self.__class__.__name__}({', '.join(map(repr, self._wrapped))})"
+
+    def as_string(self, context):
+        return '.'.join(ext.quote_ident(s, context) for s in self._wrapped)
+
+
+class Literal(Composable):
+    """
+    A `Composable` representing an SQL value to include in a query.
+
+    Usually you will want to include placeholders in the query and pass values
+    as `~cursor.execute()` arguments. If however you really really need to
+    include a literal value in the query you can use this object.
+
+    The string returned by `!as_string()` follows the normal :ref:`adaptation
+    rules <python-types-adaptation>` for Python objects.
+
+    Example::
+
+        >>> s1 = sql.Literal("foo")
+        >>> s2 = sql.Literal("ba'r")
+        >>> s3 = sql.Literal(42)
+        >>> print(sql.SQL(', ').join([s1, s2, s3]).as_string(conn))
+        'foo', 'ba''r', 42
+
+    """
+    @property
+    def wrapped(self):
+        """The object wrapped by the `!Literal`."""
+        return self._wrapped
+
+    def as_string(self, context):
+        # is it a connection or cursor?
+        if isinstance(context, ext.connection):
+            conn = context
+        elif isinstance(context, ext.cursor):
+            conn = context.connection
+        else:
+            raise TypeError("context must be a connection or a cursor")
+
+        a = ext.adapt(self._wrapped)
+        if hasattr(a, 'prepare'):
+            a.prepare(conn)
+
+        rv = a.getquoted()
+        if isinstance(rv, bytes):
+            rv = rv.decode(ext.encodings[conn.encoding])
+
+        return rv
+
+
+class Placeholder(Composable):
+    """A `Composable` representing a placeholder for query parameters.
+
+    If the name is specified, generate a named placeholder (e.g. ``%(name)s``),
+    otherwise generate a positional placeholder (e.g. ``%s``).
+
+    The object is useful to generate SQL queries with a variable number of
+    arguments.
+
+    Examples::
+
+        >>> names = ['foo', 'bar', 'baz']
+
+        >>> q1 = sql.SQL("insert into table ({}) values ({})").format(
+        ...     sql.SQL(', ').join(map(sql.Identifier, names)),
+        ...     sql.SQL(', ').join(sql.Placeholder() * len(names)))
+        >>> print(q1.as_string(conn))
+        insert into table ("foo", "bar", "baz") values (%s, %s, %s)
+
+        >>> q2 = sql.SQL("insert into table ({}) values ({})").format(
+        ...     sql.SQL(', ').join(map(sql.Identifier, names)),
+        ...     sql.SQL(', ').join(map(sql.Placeholder, names)))
+        >>> print(q2.as_string(conn))
+        insert into table ("foo", "bar", "baz") values (%(foo)s, %(bar)s, %(baz)s)
+
+    """
+
+    def __init__(self, name=None):
+        if isinstance(name, str):
+            if ')' in name:
+                raise ValueError(f"invalid name: {name!r}")
+
+        elif name is not None:
+            raise TypeError(f"expected string or None as name, got {name!r}")
+
+        super().__init__(name)
+
+    @property
+    def name(self):
+        """The name of the `!Placeholder`."""
+        return self._wrapped
+
+    def __repr__(self):
+        if self._wrapped is None:
+            return f"{self.__class__.__name__}()"
+        else:
+            return f"{self.__class__.__name__}({self._wrapped!r})"
+
+    def as_string(self, context):
+        if self._wrapped is not None:
+            return f"%({self._wrapped})s"
+        else:
+            return "%s"
+
+
+# Literals
+NULL = SQL("NULL")
+DEFAULT = SQL("DEFAULT")

psycopg2/tz.py

@@ -0,0 +1,158 @@
+"""tzinfo implementations for psycopg2
+
+This module holds two different tzinfo implementations that can be used as
+the 'tzinfo' argument to datetime constructors, directly passed to psycopg
+functions or used to set the .tzinfo_factory attribute in cursors.
+"""
+# psycopg/tz.py - tzinfo implementation
+#
+# 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 datetime
+import time
+
+ZERO = datetime.timedelta(0)
+
+
+class FixedOffsetTimezone(datetime.tzinfo):
+    """Fixed offset in minutes east from UTC.
+
+    This is exactly the implementation__ found in Python 2.3.x documentation,
+    with a small change to the `!__init__()` method to allow for pickling
+    and a default name in the form ``sHH:MM`` (``s`` is the sign.).
+
+    The implementation also caches instances. During creation, if a
+    FixedOffsetTimezone instance has previously been created with the same
+    offset and name that instance will be returned. This saves memory and
+    improves comparability.
+
+    .. versionchanged:: 2.9
+
+        The constructor can take either a timedelta or a number of minutes of
+        offset. Previously only minutes were supported.
+
+    .. __: https://docs.python.org/library/datetime.html
+    """
+    _name = None
+    _offset = ZERO
+
+    _cache = {}
+
+    def __init__(self, offset=None, name=None):
+        if offset is not None:
+            if not isinstance(offset, datetime.timedelta):
+                offset = datetime.timedelta(minutes=offset)
+            self._offset = offset
+        if name is not None:
+            self._name = name
+
+    def __new__(cls, offset=None, name=None):
+        """Return a suitable instance created earlier if it exists
+        """
+        key = (offset, name)
+        try:
+            return cls._cache[key]
+        except KeyError:
+            tz = super().__new__(cls, offset, name)
+            cls._cache[key] = tz
+            return tz
+
+    def __repr__(self):
+        return "psycopg2.tz.FixedOffsetTimezone(offset=%r, name=%r)" \
+            % (self._offset, self._name)
+
+    def __eq__(self, other):
+        if isinstance(other, FixedOffsetTimezone):
+            return self._offset == other._offset
+        else:
+            return NotImplemented
+
+    def __ne__(self, other):
+        if isinstance(other, FixedOffsetTimezone):
+            return self._offset != other._offset
+        else:
+            return NotImplemented
+
+    def __getinitargs__(self):
+        return self._offset, self._name
+
+    def utcoffset(self, dt):
+        return self._offset
+
+    def tzname(self, dt):
+        if self._name is not None:
+            return self._name
+
+        minutes, seconds = divmod(self._offset.total_seconds(), 60)
+        hours, minutes = divmod(minutes, 60)
+        rv = "%+03d" % hours
+        if minutes or seconds:
+            rv += ":%02d" % minutes
+            if seconds:
+                rv += ":%02d" % seconds
+
+        return rv
+
+    def dst(self, dt):
+        return ZERO
+
+
+STDOFFSET = datetime.timedelta(seconds=-time.timezone)
+if time.daylight:
+    DSTOFFSET = datetime.timedelta(seconds=-time.altzone)
+else:
+    DSTOFFSET = STDOFFSET
+DSTDIFF = DSTOFFSET - STDOFFSET
+
+
+class LocalTimezone(datetime.tzinfo):
+    """Platform idea of local timezone.
+
+    This is the exact implementation from the Python 2.3 documentation.
+    """
+    def utcoffset(self, dt):
+        if self._isdst(dt):
+            return DSTOFFSET
+        else:
+            return STDOFFSET
+
+    def dst(self, dt):
+        if self._isdst(dt):
+            return DSTDIFF
+        else:
+            return ZERO
+
+    def tzname(self, dt):
+        return time.tzname[self._isdst(dt)]
+
+    def _isdst(self, dt):
+        tt = (dt.year, dt.month, dt.day,
+              dt.hour, dt.minute, dt.second,
+              dt.weekday(), 0, -1)
+        stamp = time.mktime(tt)
+        tt = time.localtime(stamp)
+        return tt.tm_isdst > 0
+
+
+LOCAL = LocalTimezone()
+
+# TODO: pre-generate some interesting time zones?

psycopg2_binary-2.9.1.dist-info/INSTALLER

@@ -0,0 +1 @@
+pip

psycopg2_binary-2.9.1.dist-info/LICENSE

@@ -0,0 +1,49 @@
+psycopg2 and the LGPL
+---------------------
+
+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.
+
+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.
+
+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. If you modify file(s) with this
+exception, you may extend this exception to your version of the file(s),
+but you are not obligated to do so. If you do not wish to do so, delete
+this exception statement from your version. If you delete this exception
+statement from all source files in the program, then also delete it here.
+
+You should have received a copy of the GNU Lesser General Public License
+along with psycopg2 (see the doc/ directory.)
+If not, see <https://www.gnu.org/licenses/>.
+
+
+Alternative licenses
+--------------------
+
+The following BSD-like license applies (at your option) to the files following
+the pattern ``psycopg/adapter*.{h,c}`` and ``psycopg/microprotocol*.{h,c}``:
+
+ Permission is granted to anyone to use this software for any purpose,
+ including commercial applications, and to alter it and redistribute it
+ freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not
+    claim that you wrote the original software. If you use this
+    software in a product, an acknowledgment in the product documentation
+    would be appreciated but is not required.
+
+ 2. Altered source versions must be plainly marked as such, and must not
+    be misrepresented as being the original software.
+
+ 3. This notice may not be removed or altered from any source distribution.

psycopg2_binary-2.9.1.dist-info/METADATA

@@ -0,0 +1,109 @@
+Metadata-Version: 2.1
+Name: psycopg2-binary
+Version: 2.9.1
+Summary: psycopg2 - Python-PostgreSQL Database Adapter
+Home-page: https://psycopg.org/
+Author: Federico Di Gregorio
+Author-email: fog@initd.org
+Maintainer: Daniele Varrazzo
+Maintainer-email: daniele.varrazzo@gmail.org
+License: LGPL with exceptions
+Project-URL: Homepage, https://psycopg.org/
+Project-URL: Documentation, https://www.psycopg.org/docs/
+Project-URL: Code, https://github.com/psycopg/psycopg2
+Project-URL: Issue Tracker, https://github.com/psycopg/psycopg2/issues
+Project-URL: Download, https://pypi.org/project/psycopg2/
+Platform: any
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Intended Audience :: Developers
+Classifier: License :: OSI Approved :: GNU Library or Lesser General Public License (LGPL)
+Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.6
+Classifier: Programming Language :: Python :: 3.7
+Classifier: Programming Language :: Python :: 3.8
+Classifier: Programming Language :: Python :: 3.9
+Classifier: Programming Language :: Python :: 3 :: Only
+Classifier: Programming Language :: Python :: Implementation :: CPython
+Classifier: Programming Language :: C
+Classifier: Programming Language :: SQL
+Classifier: Topic :: Database
+Classifier: Topic :: Database :: Front-Ends
+Classifier: Topic :: Software Development
+Classifier: Topic :: Software Development :: Libraries :: Python Modules
+Classifier: Operating System :: Microsoft :: Windows
+Classifier: Operating System :: Unix
+Requires-Python: >=3.6
+
+Psycopg is the most popular PostgreSQL database adapter for the Python
+programming language.  Its main features are the complete implementation of
+the Python DB API 2.0 specification and the thread safety (several threads can
+share the same connection).  It was designed for heavily multi-threaded
+applications that create and destroy lots of cursors and make a large number
+of concurrent "INSERT"s or "UPDATE"s.
+
+Psycopg 2 is mostly implemented in C as a libpq wrapper, resulting in being
+both efficient and secure.  It features client-side and server-side cursors,
+asynchronous communication and notifications, "COPY TO/COPY FROM" support.
+Many Python types are supported out-of-the-box and adapted to matching
+PostgreSQL data types; adaptation can be extended and customized thanks to a
+flexible objects adaptation system.
+
+Psycopg 2 is both Unicode and Python 3 friendly.
+
+
+Documentation
+-------------
+
+Documentation is included in the ``doc`` directory and is `available online`__.
+
+.. __: https://www.psycopg.org/docs/
+
+For any other resource (source code repository, bug tracker, mailing list)
+please check the `project homepage`__.
+
+.. __: https://psycopg.org/
+
+
+Installation
+------------
+
+Building Psycopg requires a few prerequisites (a C compiler, some development
+packages): please check the install_ and the faq_ documents in the ``doc`` dir
+or online for the details.
+
+If prerequisites are met, you can install psycopg like any other Python
+package, using ``pip`` to download it from PyPI_::
+
+    $ pip install psycopg2
+
+or using ``setup.py`` if you have downloaded the source package locally::
+
+    $ python setup.py build
+    $ sudo python setup.py install
+
+You can also obtain a stand-alone package, not requiring a compiler or
+external libraries, by installing the `psycopg2-binary`_ package from PyPI::
+
+    $ pip install psycopg2-binary
+
+The binary package is a practical choice for development and testing but in
+production it is advised to use the package built from sources.
+
+.. _PyPI: https://pypi.org/project/psycopg2/
+.. _psycopg2-binary: https://pypi.org/project/psycopg2-binary/
+.. _install: https://www.psycopg.org/docs/install.html#install-from-source
+.. _faq: https://www.psycopg.org/docs/faq.html#faq-compile
+
+:Linux/OSX: |gh-actions|
+:Windows: |appveyor|
+
+.. |gh-actions| image:: https://github.com/psycopg/psycopg2/actions/workflows/tests.yml/badge.svg
+    :target: https://github.com/psycopg/psycopg2/actions/workflows/tests.yml
+    :alt: Linux and OSX build status
+
+.. |appveyor| image:: https://ci.appveyor.com/api/projects/status/github/psycopg/psycopg2?branch=master&svg=true
+    :target: https://ci.appveyor.com/project/psycopg/psycopg2/branch/master
+    :alt: Windows build status
+
+

psycopg2_binary-2.9.1.dist-info/RECORD

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+psycopg2_binary-2.9.1.dist-info/LICENSE,sha256=lhS4XfyacsWyyjMUTB1-HtOxwpdFnZ-yimpXYsLo1xs,2238
+psycopg2_binary-2.9.1.dist-info/METADATA,sha256=VPf4Sf-grXf4XxdA-FKdJOYHF--kra-6S8XI8fl5UGE,4322
+psycopg2_binary-2.9.1.dist-info/RECORD,,
+psycopg2_binary-2.9.1.dist-info/WHEEL,sha256=YglPFYw5KGRo4lYd8nnG23sfeQiYV_V6SgUtLfHfx7o,251
+psycopg2_binary-2.9.1.dist-info/top_level.txt,sha256=7dHGpLqQ3w-vGmGEVn-7uK90qU9fyrGdWWi7S-gTcnM,9

psycopg2_binary-2.9.1.dist-info/WHEEL

@@ -0,0 +1,9 @@
+Wheel-Version: 1.0
+Generator: bdist_wheel (0.36.2)
+Root-Is-Purelib: false
+Tag: cp37-cp37m-macosx_10_14_x86_64
+Tag: cp37-cp37m-macosx_10_9_intel
+Tag: cp37-cp37m-macosx_10_9_x86_64
+Tag: cp37-cp37m-macosx_10_10_intel
+Tag: cp37-cp37m-macosx_10_10_x86_64
+

psycopg2_binary-2.9.1.dist-info/top_level.txt

@@ -0,0 +1 @@
+psycopg2