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.kla...@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.kla...@aklaver.com <mailto:adrian.kla...@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.kla...@aklaver.com <mailto:adrian.kla...@aklaver.com> > > > > > -- > Adrian Klaver > adrian.kla...@aklaver.com >
