Adrian Klaver <adrian.klaver@xxxxxxxxxxx> writes: > On 8/1/21 7:40 AM, Ganesh Korde wrote: >> I am trying to run a python function using the language plpython3u and >> I am getting the below error, though I have installed psutil. >> >> postgres=# select * from get_psutil_mem(); >> ERROR: ImportError: No module named 'psutil' > How did you install plpython3u? > How did you install psutil? Experimenting locally, I observe something that seems relevant: I get that error message phrasing from python *2*. In python 3, an unknown module name draws "ModuleNotFoundError": $ python3 Python 3.6.8 (default, Mar 18 2021, 08:58:41) [GCC 8.4.1 20200928 (Red Hat 8.4.1-1)] on linux Type "help", "copyright", "credits" or "license" for more information. >>> from z import virtual_memory, swap_memory Traceback (most recent call last): File "<stdin>", line 1, in <module> ModuleNotFoundError: No module named 'z' Now it's possible that the wording didn't change exactly at the 2/3 boundary, but I doubt it. So it looks to me like the alleged plpython3u language is actually invoking python 2.something, which is unlikely to work well at all. regards, tom lane