Hello, On Tue, 6 Sept 2022 at 17:06, Gil Sousa <gilso...@gmail.com> wrote: > > Hi all, > > I am trying to use psycopg2 for the very first time, though I am stumbling > with an error when trying to import the module: > > ✗ python3.9 radars_import.py > Traceback (most recent call last): > File "/Users/gilsousa/Documents/git Projects/ReportGen/radars_import.py", > line 2, in <module> > import psycopg2 > File > "/Users/gilsousa/Library/Python/3.9/lib/python/site-packages/psycopg2/__init__.py", > line 51, in <module> > from psycopg2._psycopg import ( # noqa > ImportError: > dlopen(/Users/gilsousa/Library/Python/3.9/lib/python/site-packages/psycopg2/_psycopg.cpython-39-darwin.so, > 0x0002): symbol not found in flat namespace '_PQbackendPID' > > I made sure that I have the packages installed, both psycopg2 and > psycopg2-binary. I even tried to uninstall both and just try one at a time, > also didn't work.
You should install only one of them. If you are using an apple M1, psycopg2-binary doesn't actually install a binary package and falls back to building from source. > How can I fix this problem? I don't have a macOS but the problem has surfaced often, according to google. It seems related to the wrong installation of the libpq, and it doesn't help that a few days ago Homebrew has broken the libpq installation <https://github.com/psycopg/psycopg2/issues/1492>. See https://gist.github.com/peter-gy/0ebe072acb9065944ecb04d95a4c3096 for an example of someone fixing your problem. Cheers -- Daniele
