Re: Help with plpython3u - Mailing list pgsql-general
| From | PEDRO PABLO SEVERIN HONORATO |
|---|---|
| Subject | Re: Help with plpython3u |
| Date | |
| Msg-id | CAB2K=JM+Ch_XiKP-gEu0as5UQ=QpZpQtHK6RVhDu9tROD+Q_1w@mail.gmail.com Whole thread Raw |
| In response to | Re: Help with plpython3u (Adrian Klaver <adrian.klaver@aklaver.com>) |
| Responses |
Re: Help with plpython3u
(Adrian Klaver <adrian.klaver@aklaver.com>)
|
| List | pgsql-general |
Thanks Adrian, this actually helped me. I was looking for the "language pack" thing without any success and thanks god that you pointed me in the right direction :)
What I don't understand is the following. After installing the language pack with stack builder, added a variable named "PYTHONHOME" with its path (C:\edb\languagepack\v1\Python-3.7) and then added PYTHONHOME and the full path to the PATH variable. After that, I restarted the server as requested but nothing happened. Then I added "%" to the beginning and the end of PYTHONHOME and C:\edb\languagepack\v1\Python-3.7, restarted the server and then it worked. Why is that?
Also, I would like to know if it is possible to import specific python libraries? For example, I would like to use the talib library, which can be downloaded and installed. Or a custom library made by myself. And how can I import other python libraries, like scikit learn? Where can I find information about this?
Thank you so much for your help!! :D
PS
El mar., 9 jun. 2020 a las 20:37, Adrian Klaver (<adrian.klaver@aklaver.com>) escribió:
On 6/9/20 5:26 PM, PEDRO PABLO SEVERIN HONORATO wrote:
> Hi Adrian,
>
> I installed Postgres downloading the file posgresql-12.2-1-windows-x64
> from the website https://www.postgresql.org/download/windows/.
Did you go through the steps here?:
https://www.enterprisedb.com/edb-docs/d/postgresql/user-guides/language-pack-guide/12/toc.html
>
> The python37.dll I copied to the System32 folder was located
> in C:\Users\developer\Anaconda3.
> After trying this, I installed python 3.7.0 and copied the python37.dll
> that comes with the installation, but got the same result.
>
> Thanks,
> PS
>
> El mar., 9 jun. 2020 a las 20:17, Adrian Klaver
> (<adrian.klaver@aklaver.com <mailto:adrian.klaver@aklaver.com>>) escribió:
>
> On 6/9/20 5:09 PM, PEDRO PABLO SEVERIN HONORATO wrote:
> > Hello!
> >
> > I'm cracking my head while trying to make python language work
> within
> > postges. I executed "*create extension plpython3u*" but I get
> this error:
> >
> > "*ERROR: could not load library "C:/Program
> > Files/PostgreSQL/12/lib/plpython3.dll": The specified module
> could not
> > be found. SQL state: 58P01*"
> >
> > Looking into several stackoverflow pages and asking like
> everywhere, I
> > also installed dependency walker and saw that python37.dll was
> required.
> > My PC already has python 3.7.4, but I don't know if that is an
> issue and
> > postgres requires python 3.7.0 strictly.
> >
> > I also copied the python37.dll file directly in the System32
> folder, as
> > some pages suggested. That actually made it possible to run the
> > "* create extension plpython3u* ", but when I try to create a simple
> > function like:
> >
> > "*CREATE FUNCTION pymax (a integer, b integer)*
> > * RETURNS integer
> > AS $$
> > if a > b:
> > return a
> > return b
> > *
> > *$$ LANGUAGE plpython3u*;"
> >
> > The server crashes and I get this message: "*Connection to the
> server
> > has been lost*."
> >
> > Some additional information:
> > - My PC is running windows server 2019 64 bits (its a vps)
>
> How did you install Postgres?
>
> > - The python version I have is 3.7.4. Installed it with Anaconda
>
> Unless things have changed since the last time I used Anaconda, it
> basically creates virtualenvs for it's installs. So when you refer to
> the Python dll above are you talking about a system installed one or
> one
> from within the Anaconda environment?
>
> > - Postgres version is 12.2-1. pgAdmin is 4.18
> >
> > Please, help me :(
> > Regards,
> > PS
>
>
> --
> Adrian Klaver
> adrian.klaver@aklaver.com <mailto:adrian.klaver@aklaver.com>
>
--
Adrian Klaver
adrian.klaver@aklaver.com
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