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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>46.3. Sharing Data</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="plpython-data.html" title="46.2. Data Values" /><link rel="next" href="plpython-do.html" title="46.4. Anonymous Code Blocks" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">46.3. Sharing Data</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="plpython-data.html" title="46.2. Data Values">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="plpython.html" title="Chapter 46. PL/Python — Python Procedural Language">Up</a></td><th width="60%" align="center">Chapter 46. PL/Python — Python Procedural Language</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.7 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="plpython-do.html" title="46.4. Anonymous Code Blocks">Next</a></td></tr></table><hr /></div><div class="sect1" id="PLPYTHON-SHARING"><div class="titlepage"><div><div><h2 class="title" style="clear: both">46.3. Sharing Data</h2></div></div></div><p>
The global dictionary <code class="varname">SD</code> is available to store
private data between repeated calls to the same function.
The global dictionary <code class="varname">GD</code> is public data,
that is available to all Python functions within a session; use with
care.<a id="id-1.8.11.11.2.3" class="indexterm"></a>
</p><p>
Each function gets its own execution environment in the
Python interpreter, so that global data and function arguments from
<code class="function">myfunc</code> are not available to
<code class="function">myfunc2</code>. The exception is the data in the
<code class="varname">GD</code> dictionary, as mentioned above.
</p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="plpython-data.html" title="46.2. Data Values">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="plpython.html" title="Chapter 46. PL/Python — Python Procedural Language">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="plpython-do.html" title="46.4. Anonymous Code Blocks">Next</a></td></tr><tr><td width="40%" align="left" valign="top">46.2. Data Values </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.7 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 46.4. Anonymous Code Blocks</td></tr></table></div></body></html>
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