No module named ‘psycopg2._psycopg’

Graham Hay

I was trying to set up a python lambda, and fell at the first hurdle:

What made it confusing was that I had copied an existing lambda, that was working fine. I checked a few things that were different: the python version (3.7), no effect. Even the name of the module/function.

I was using psycopg2-binary, and the zip file structure looked right. Eventually, I found a SO answer suggesting it could be arch related, at which point I realised that I had pip installed using docker, rather than venv.

I have no idea why that mattered (uname showed the same arch from python:3.7 as my laptop), but onwards to the next problem! 🤷

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