<?xml version="1.0" encoding="UTF-8" standalone="no"?> <!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>46.11. Environment Variables</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-util.html" title="46.10. Utility Functions" /><link rel="next" href="spi.html" title="Chapter 47. Server Programming Interface" /></head><body><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">46.11. Environment Variables</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="plpython-util.html" title="46.10. Utility Functions">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 11.5 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="spi.html" title="Chapter 47. Server Programming Interface">Next</a></td></tr></table><hr></hr></div><div class="sect1" id="PLPYTHON-ENVAR"><div class="titlepage"><div><div><h2 class="title" style="clear: both">46.11. Environment Variables</h2></div></div></div><p> Some of the environment variables that are accepted by the Python interpreter can also be used to affect PL/Python behavior. They would need to be set in the environment of the main PostgreSQL server process, for example in a start script. The available environment variables depend on the version of Python; see the Python documentation for details. At the time of this writing, the following environment variables have an affect on PL/Python, assuming an adequate Python version: </p><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p><code class="envar">PYTHONHOME</code></p></li><li class="listitem"><p><code class="envar">PYTHONPATH</code></p></li><li class="listitem"><p><code class="envar">PYTHONY2K</code></p></li><li class="listitem"><p><code class="envar">PYTHONOPTIMIZE</code></p></li><li class="listitem"><p><code class="envar">PYTHONDEBUG</code></p></li><li class="listitem"><p><code class="envar">PYTHONVERBOSE</code></p></li><li class="listitem"><p><code class="envar">PYTHONCASEOK</code></p></li><li class="listitem"><p><code class="envar">PYTHONDONTWRITEBYTECODE</code></p></li><li class="listitem"><p><code class="envar">PYTHONIOENCODING</code></p></li><li class="listitem"><p><code class="envar">PYTHONUSERBASE</code></p></li><li class="listitem"><p><code class="envar">PYTHONHASHSEED</code></p></li></ul></div><p> (It appears to be a Python implementation detail beyond the control of PL/Python that some of the environment variables listed on the <code class="command">python</code> man page are only effective in a command-line interpreter and not an embedded Python interpreter.) </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="plpython-util.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="plpython.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="spi.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">46.10. Utility Functions </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Chapter 47. Server Programming Interface</td></tr></table></div></body></html>
