python import issues with serverless offline

getting this error in project with both node and python functions & serverless-offline.

Traceback (most recent call last):
  File "myproject/node_modules/serverless-offline/dist/lambda/handler-runner/python-runner/invoke.py", line 76, in <module>

    module = import_module(args.handler_path.replace(os.sep, '.'))
  File "/usr/lib64/python3.9/importlib/__init__.py", line 122, in import_module
    raise TypeError(msg.format(name))
TypeError: the 'package' argument is required to perform a relative import for '.esbuild..build.lambdas.tesseract'

I think its because the pre-offline.js modifies the path for all functions. If I manually comment out pre-offline.js (code in the conditional) - then python functions start to work, but obviously that breaks all nodejs functions.

sls invoke local works fine with both the python and node functions.

[samchungy]

This is an issue actually with how serverless-offline loads python modules. https://github.com/dherault/serverless-offline/issues/993. I’ll see if I can add customisation options for where things get outputted in our repo

[samchungy]

Hey @samchungy. Thanks for getting back to me. Here is a simple repo showing the issue: https://github.com/ckjoris/sls-esbuild-repro

It has two lambda functions defined, a nodejs & a python one. yarn run serverless invoke local -f func_py and yarn run serverless invoke local -f func_node work fine. However starting serverless-offline with yarn run start, then curl http://localhost:5500/func_py causes an python import issue

Thanks mate! I’m in the process of adding some integration tests so I’ll include something similar.