From: Tom Lane <tgl@sss.pgh.pa.us>
To: Adrian Klaver <adrian.klaver@aklaver.com>
Cc: Ganesh Korde <ganeshakorde@gmail.com>
Cc: pgsql-general <pgsql-general@lists.postgresql.org>
Subject: Re: ERROR: ImportError: No module named 'psutil'
Date: Sun, 01 Aug 2021 11:51:03 -0400
Message-ID: <1442423.1627833063@sss.pgh.pa.us> (raw)
In-Reply-To: <113c9dee-7126-79f3-0c78-03ecbba89f0b@aklaver.com>
References: <CAPNyb0UKUn_RwvD+jtmo27CqPzrOa3Ae+JuzCcWwnNXvnwPMSg@mail.gmail.com>
<CAPNyb0X=vq55ZWNuK1n+gfhPLy+J8KDn9XXcONKj30iZPYi+Kw@mail.gmail.com>
<113c9dee-7126-79f3-0c78-03ecbba89f0b@aklaver.com>
Adrian Klaver <adrian.klaver@aklaver.com> 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
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Subject: Re: ERROR: ImportError: No module named 'psutil'
In-Reply-To: <1442423.1627833063@sss.pgh.pa.us>
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