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ThePL/Python procedural language allowsPostgreSQL functions to be written in thePython language.
To install PL/Python in a particular database, useCREATE EXTENSION plpythonu (but see alsoSection 45.1).
If a language is installed intotemplate1, all subsequently created databases will have the language installed automatically.
PL/Python is only available as an“untrusted” language, meaning it does not offer any way of restricting what users can do in it and is therefore namedplpythonu. A trusted variantplpython might become available in the future if a secure execution mechanism is developed in Python. The writer of a function in untrusted PL/Python must take care that the function cannot be used to do anything unwanted, since it will be able to do anything that could be done by a user logged in as the database administrator. Only superusers can create functions in untrusted languages such asplpythonu.
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.