PostgreSQL 8.4.17 Documentation
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# Chapter 41. PL/Python - Python Procedural Language

The PL/Python procedural language allows PostgreSQL functions to be written in the Python language.

To install PL/Python in a particular database, use `createlang plpythonu `dbname``.

> Tip: If a language is installed into `template1`, all subsequently created databases will have the language installed automatically.

As of PostgreSQL 7.4, PL/Python is only available as an "untrusted" language (meaning it does not offer any way of restricting what users can do in it). It has therefore been renamed to `plpythonu`. The trusted variant `plpython` might become available again in future, if a new secure execution mechanism is developed in Python.

> Note: Users of source packages must specially enable the build of PL/Python during the installation process. (Refer to the installation instructions for more information.) Users of binary packages might find PL/Python in a separate subpackage.

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Limitations and Missing Features | Up | PL/Python Functions