# 46. PL/Python - Python Procedural Language

PL/Python 程序語言允許 PostgreSQL 函數以 [Python 語言](https://www.python.org/)撰寫。

To install PL/Python in a particular database, use `CREATE EXTENSION plpython3u`.

{% hint style="info" %}
如果將語言安裝到 template1 中，則所有隨後建立的資料庫將自動安裝該語言。
{% endhint %}

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 `plpython3u`. 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 `plpython3u`.

{% hint style="info" %}
自行編譯原始碼的使用者必須在安裝程序中特別啟用 PL/Python 的編譯。（更多相關資訊，請參閱安裝說明。）使用預先編譯版本的使用者可以在單獨的套件中找到 PL/Python。
{% endhint %}


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