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The PL/Python procedural language allows PostgreSQL functions to be written in the Python language.
To install PL/Python in a particular database, use
CREATE EXTENSION plpythonu (but see also Section 45.1).
If a language is installed into
template1, 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 named
plpythonu. A trusted variant
plpython 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 as
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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