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Package psycopg2
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<!-- ==================== PACKAGE DESCRIPTION ==================== -->
<h1 class="epydoc">Package psycopg2</h1><span class="codelink"><a href="psycopg2-pysrc.html">source code</a></span><br /><br />
<pre class="literalblock">
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: http://initd.org/projects/psycopg2
.. _PostgreSQL: http://www.postgresql.org/
.. _Python: http://www.python.org/
:Groups:
* `Connections creation`: connect
* `Value objects constructors`: Binary, Date, DateFromTicks, Time,
TimeFromTicks, Timestamp, TimestampFromTicks
</pre><br /><br />
<hr />
<div class="fields"> <p><strong>Version:</strong>
2.0.6 (dec mx dt ext pq3)
</p>
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<ul class="nomargin">
<li> <strong class="uidlink"><a href="psycopg2.tz-module.html">psycopg2.tz</a></strong>: <em class="summary">tzinfo implementations for psycopg2</em> </li>
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<!-- ==================== CLASSES ==================== -->
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<span class="summary-type"> </span>
</td><td class="summary">
<a href="psycopg2.DataError-class.html" class="summary-name">DataError</a><br />
Error related to problems with the processed data.
</td>
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<span class="summary-type"> </span>
</td><td class="summary">
<a href="psycopg2.DatabaseError-class.html" class="summary-name">DatabaseError</a><br />
Error related to the database engine.
</td>
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<span class="summary-type"> </span>
</td><td class="summary">
<a href="psycopg2.Error-class.html" class="summary-name">Error</a><br />
Base class for error exceptions.
</td>
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<span class="summary-type"> </span>
</td><td class="summary">
<a href="psycopg2.IntegrityError-class.html" class="summary-name">IntegrityError</a><br />
Error related to database integrity.
</td>
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<span class="summary-type"> </span>
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<a href="psycopg2.InterfaceError-class.html" class="summary-name">InterfaceError</a><br />
Error related to the database interface.
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<span class="summary-type"> </span>
</td><td class="summary">
<a href="psycopg2.InternalError-class.html" class="summary-name">InternalError</a><br />
The database encountered an internal error.
</td>
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<span class="summary-type"> </span>
</td><td class="summary">
<a href="psycopg2.NotSupportedError-class.html" class="summary-name">NotSupportedError</a><br />
A not supported datbase API was called.
</td>
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<span class="summary-type"> </span>
</td><td class="summary">
<a href="psycopg2.OperationalError-class.html" class="summary-name">OperationalError</a><br />
Error related to database operation (disconnect, memory
allocation etc).
</td>
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<span class="summary-type"> </span>
</td><td class="summary">
<a href="psycopg2.ProgrammingError-class.html" class="summary-name">ProgrammingError</a><br />
Error related to database programming (SQL error, table not
found etc).
</td>
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<span class="summary-type"> </span>
</td><td class="summary">
<a href="psycopg2.Warning-class.html" class="summary-name">Warning</a><br />
A database warning.
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<!-- ==================== FUNCTIONS ==================== -->
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<span class="summary-type"> </span>
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<td><span class="summary-sig"><a href="psycopg2-module.html#Binary" class="summary-sig-name">Binary</a>(<span class="summary-sig-arg">buffer</span>)</span><br />
Build an object capable to hold a bynary string value.</td>
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</td>
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<span class="summary-type"> </span>
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<td><span class="summary-sig"><a href="psycopg2-module.html#Date" class="summary-sig-name">Date</a>(<span class="summary-sig-arg">year</span>,
<span class="summary-sig-arg">month</span>,
<span class="summary-sig-arg">day</span>)</span><br />
Build an object holding a date value.</td>
<td align="right" valign="top">
</td>
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<span class="summary-type"> </span>
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<td><span class="summary-sig"><a href="psycopg2-module.html#DateFromTicks" class="summary-sig-name">DateFromTicks</a>(<span class="summary-sig-arg">ticks</span>)</span><br />
Build an object holding a date value from the given ticks
value.</td>
<td align="right" valign="top">
</td>
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</table>
</td>
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<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="psycopg2-module.html#Time" class="summary-sig-name">Time</a>(<span class="summary-sig-arg">hour</span>,
<span class="summary-sig-arg">minutes</span>,
<span class="summary-sig-arg">seconds</span>,
<span class="summary-sig-arg">tzinfo</span>=<span class="summary-sig-default">None</span>)</span><br />
Build an object holding a time value.</td>
<td align="right" valign="top">
</td>
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</td>
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<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
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<tr>
<td><span class="summary-sig"><a href="psycopg2-module.html#TimeFromTicks" class="summary-sig-name">TimeFromTicks</a>(<span class="summary-sig-arg">ticks</span>)</span><br />
Build an object holding a time value from the given ticks
value.</td>
<td align="right" valign="top">
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="psycopg2-module.html#Timestamp" class="summary-sig-name">Timestamp</a>(<span class="summary-sig-arg">year</span>,
<span class="summary-sig-arg">month</span>,
<span class="summary-sig-arg">day</span>,
<span class="summary-sig-arg">hour</span>,
<span class="summary-sig-arg">minutes</span>,
<span class="summary-sig-arg">seconds</span>,
<span class="summary-sig-arg">tzinfo</span>=<span class="summary-sig-default">None</span>)</span><br />
Build an object holding a timestamp value.</td>
<td align="right" valign="top">
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
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<tr>
<td><span class="summary-sig"><a href="psycopg2-module.html#TimestampFromTicks" class="summary-sig-name">TimestampFromTicks</a>(<span class="summary-sig-arg">ticks</span>)</span><br />
Build an object holding a timestamp value from the given ticks
value.</td>
<td align="right" valign="top">
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="psycopg2-module.html#connect" class="summary-sig-name">connect</a>(<span class="summary-sig-arg">dsn</span>,
<span class="summary-sig-arg">...</span>)</span><br />
Create a new database connection.</td>
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</td>
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<!-- ==================== VARIABLES ==================== -->
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<a name="BINARY"></a><span class="summary-name">BINARY</span> = <code title="<psycopg2._psycopg.type object at 0xd660a0>"><psycopg2._psycopg.type object at 0xd660a0></code>
</td>
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<span class="summary-type"> </span>
</td><td class="summary">
<a name="DATETIME"></a><span class="summary-name">DATETIME</span> = <code title="<psycopg2._psycopg.type object at 0xd5ef80>"><psycopg2._psycopg.type object at 0xd5ef80></code>
</td>
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<span class="summary-type"> </span>
</td><td class="summary">
<a name="NUMBER"></a><span class="summary-name">NUMBER</span> = <code title="<psycopg2._psycopg.type object at 0xd5ed88>"><psycopg2._psycopg.type object at 0xd5ed88></code>
</td>
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<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="ROWID"></a><span class="summary-name">ROWID</span> = <code title="<psycopg2._psycopg.type object at 0xd660d8>"><psycopg2._psycopg.type object at 0xd660d8></code>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<a name="STRING"></a><span class="summary-name">STRING</span> = <code title="<psycopg2._psycopg.type object at 0xd5ef10>"><psycopg2._psycopg.type object at 0xd5ef10></code>
</td>
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<span class="summary-type"> </span>
</td><td class="summary">
<a name="apilevel"></a><span class="summary-name">apilevel</span> = <code title="'2.0'"><code class="variable-quote">'</code><code class="variable-string">2.0</code><code class="variable-quote">'</code></code>
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<span class="summary-type"> </span>
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<a name="k"></a><span class="summary-name">k</span> = <code title="'DatabaseError'"><code class="variable-quote">'</code><code class="variable-string">DatabaseError</code><code class="variable-quote">'</code></code>
</td>
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<tr>
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<span class="summary-type"> </span>
</td><td class="summary">
<a name="paramstyle"></a><span class="summary-name">paramstyle</span> = <code title="'pyformat'"><code class="variable-quote">'</code><code class="variable-string">pyformat</code><code class="variable-quote">'</code></code>
</td>
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<span class="summary-type"> </span>
</td><td class="summary">
<a name="threadsafety"></a><span class="summary-name">threadsafety</span> = <code title="1">1</code><br />
PyMySQL: A pure-Python drop-in replacement for MySQLdb.
</td>
</tr>
</table>
<!-- ==================== FUNCTION DETAILS ==================== -->
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<a name="Binary"></a>
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<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">Binary</span>(<span class="sig-arg">buffer</span>)</span>
</h3>
</td><td align="right" valign="top"
>
</td>
</table>
Build an object capable to hold a bynary string value.
<dl class="fields">
<dt>Returns:</dt>
<dd><pre class="literalblock">
new binary object
</pre></dd>
</dl>
</td></tr></table>
</div>
<a name="Date"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">Date</span>(<span class="sig-arg">year</span>,
<span class="sig-arg">month</span>,
<span class="sig-arg">day</span>)</span>
</h3>
</td><td align="right" valign="top"
>
</td>
</table>
Build an object holding a date value.
<dl class="fields">
<dt>Returns:</dt>
<dd><pre class="literalblock">
new date
</pre></dd>
</dl>
</td></tr></table>
</div>
<a name="DateFromTicks"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">DateFromTicks</span>(<span class="sig-arg">ticks</span>)</span>
</h3>
</td><td align="right" valign="top"
>
</td>
</table>
<p>Build an object holding a date value from the given ticks value.</p>
Ticks are the number of seconds since the epoch; see the documentation
of the standard Python time module for details).
<dl class="fields">
<dt>Returns:</dt>
<dd><pre class="literalblock">
new date
</pre></dd>
</dl>
</td></tr></table>
</div>
<a name="Time"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">Time</span>(<span class="sig-arg">hour</span>,
<span class="sig-arg">minutes</span>,
<span class="sig-arg">seconds</span>,
<span class="sig-arg">tzinfo</span>=<span class="sig-default">None</span>)</span>
</h3>
</td><td align="right" valign="top"
>
</td>
</table>
Build an object holding a time value.
<dl class="fields">
<dt>Returns:</dt>
<dd><pre class="literalblock">
new time
</pre></dd>
</dl>
</td></tr></table>
</div>
<a name="TimeFromTicks"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">TimeFromTicks</span>(<span class="sig-arg">ticks</span>)</span>
</h3>
</td><td align="right" valign="top"
>
</td>
</table>
<p>Build an object holding a time value from the given ticks value.</p>
Ticks are the number of seconds since the epoch; see the documentation
of the standard Python time module for details).
<dl class="fields">
<dt>Returns:</dt>
<dd><pre class="literalblock">
new time
</pre></dd>
</dl>
</td></tr></table>
</div>
<a name="Timestamp"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">Timestamp</span>(<span class="sig-arg">year</span>,
<span class="sig-arg">month</span>,
<span class="sig-arg">day</span>,
<span class="sig-arg">hour</span>,
<span class="sig-arg">minutes</span>,
<span class="sig-arg">seconds</span>,
<span class="sig-arg">tzinfo</span>=<span class="sig-default">None</span>)</span>
</h3>
</td><td align="right" valign="top"
>
</td>
</table>
Build an object holding a timestamp value.
<dl class="fields">
<dt>Returns:</dt>
<dd><pre class="literalblock">
new timestamp
</pre></dd>
</dl>
</td></tr></table>
</div>
<a name="TimestampFromTicks"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">TimestampFromTicks</span>(<span class="sig-arg">ticks</span>)</span>
</h3>
</td><td align="right" valign="top"
>
</td>
</table>
<p>Build an object holding a timestamp value from the given ticks
value.</p>
Ticks are the number of seconds since the epoch; see the documentation
of the standard Python time module for details).
<dl class="fields">
<dt>Returns:</dt>
<dd><pre class="literalblock">
new timestamp
</pre></dd>
</dl>
</td></tr></table>
</div>
<a name="connect"></a>
<div>
<table class="details" border="1" cellpadding="3"
cellspacing="0" width="100%" bgcolor="white">
<tr><td>
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr valign="top"><td>
<h3 class="epydoc"><span class="sig"><span class="sig-name">connect</span>(<span class="sig-arg">dsn</span>,
<span class="sig-arg">...</span>)</span>
</h3>
</td><td align="right" valign="top"
>
</td>
</table>
<pre class="literalblock">
Create a new database connection.
This function supports two different but equivalent sets of arguments.
A single data source name or ``dsn`` string can be used to specify the
connection parameters, as follows::
psycopg2.connect("dbname=xxx user=xxx ...")
If ``dsn`` is not provided it is possible to pass the parameters as
keyword arguments; e.g.::
psycopg2.connect(database='xxx', user='xxx', ...)
The full list of available parameters is:
- ``dbname`` -- database name (only in 'dsn')
- ``database`` -- database name (only as keyword argument)
- ``host`` -- host address (defaults to UNIX socket if not provided)
- ``port`` -- port number (defaults to 5432 if not provided)
- ``user`` -- user name used to authenticate
- ``password`` -- password used to authenticate
- ``sslmode`` -- SSL mode (see PostgreSQL documentation)
If the ``connection_factory`` keyword argument is not provided this
function always return an instance of the `connection` class.
Else the given sub-class of `extensions.connection` will be used to
instantiate the connection object.
:return: New database connection
:rtype: `extensions.connection`
</pre>
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