Modul tidak ditemukan saat mengimpor paket Python dalam prosedur plpython3u

Selain variabel lingkungan lain seperti PGDATA dalam skrip shell (pg_service.sh), atur PYTHONPATH='/path/to/python:/path/to/your/module'

Misalnya. cat /Users/postgres/pg_service.sh

export PGDATABASE=postgres
export PGUSER=postgres
export PGPORT=5432
export PATH=/Library/PostgreSQL/11/bin:$PATH
export PGLOCALEDIR=/Library/PostgreSQL/11/share/locale
export PYTHONUSERBASE=/Users/postgres/packaging_tutorial
export PYTHONPATH=/Library/edb/languagepack-11/Python-3.6:$PYTHONUSERBASE
pg_ctl -D /Library/PostgreSQL/11/data -l /Users/postgres/logfile $1

Mulai server:

> sudo -u postgres /Users/postgres/pg_service.sh start
waiting for server to start.... done
server started 

/Users/postgres/packaging_tutorial/example_pkg/__init__.py :

def retpy3():
    return 7/5

fungsi pg:

CREATE OR REPLACE FUNCTION expy3()
RETURNS text
LANGUAGE plpython3u
AS $$
import example_pkg
return example_pkg.retpy3()
$$;

Keluaran

psql  -c 'select * from expy3()';
 expy3
--------
 1.4