I want to have python3 in my postgresql database for writing stored procedures.

Being in the psql client, when I enter the command create extension plpython3u I get the error:

couldn't open extension control file /usr/share/postgresql/9.1/extension/plpython3u.control : No such file or directory

I have checked, there are plpythonu.control and plpython2u.control in the directory, but not the one for version 3.

However I have installed the packages python3 and python3-postgresql (among others) from depot. I'm using Ubuntu 12.04, kernel, with postgresql 9.1 installed.

What should I install (or do) to have the plpython3u.control file on my machine and have python3 available in my database?


The package to install is postgresql-plpython3.

By way of dependencies, this will install postgresql-plpython3-9.1, which provides these files:

$ dpkg -L postgresql-plpython3-9.1

and then you can do:

postgres=# create extension plpython3u;
  • Did you find out the package in which the file was thanks to a special linux command, or did you know it ? – Stephane Rolland Mar 22 '13 at 0:51
  • 1
    @Stephane: apt-cache search plpython. apt-cache show packagename is useful as well. – Daniel Vérité Mar 22 '13 at 13:56

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