spawn python3.8 ENOENT while serverless deploy

[dj-ash]

Are you certain it's a bug?

• Yes, it looks like a bug

Is the issue caused by a plugin?

• It is not a plugin issue

Are you using the latest version?

• Yes, I'm using the latest version

Is there an existing issue for this?

• I have searched existing issues, it hasn't been reported yet

Issue description

When trying to deploy a python based serverless function, this is the error received in serverless deploy step.
The error is found tryint to deploy through github actions as well as circleci - both gave the same issue.
Environment: linux, node 14.19.1, framework 3.15.0 (local) 3.15.0v (global), plugin 6.2.2, SDK 4.3.2

Error: spawn python3.8 ENOENT
at Process.ChildProcess._handle.onexit (internal/child_process.js:274:19)
at onErrorNT (internal/child_process.js:469:16)
at processTicksAndRejections (internal/process/task_queues.js:82:21)
Node version is 16.x and python is 3.10. Serverless installation was fine using python 3.10.4. Plugin serverless-python-requirements installation was fine too. But the error is thrown in serverless deploy

Service configuration (serverless.yml) content

version: 2.1
orbs:
   aws-cli: circleci/[email protected]
   node: circleci/[email protected]
   serverless: circleci/[email protected]
jobs:
   one:
     docker:
       - image: cimg/python:3.10
     executor: serverless/default
     steps:
       - checkout
       - aws-cli/setup
       - node/install:
          install-yarn: true
          node-version: '16.13'
       - run: node --version
       - run: npm install
       - serverless/setup
       - run: sudo apt-get update -y
       - run: sudo apt-get install -y poppler-utils
       - run: sudo apt-get install -y python3.8
       - run:
          name: serverless python plugin
          command: sls plugin install -n serverless-python-requirements
       - run: sls deploy

Command name and used flags

serverless deploy

Command output

Error: spawn python3.8 ENOENT
    at Process.ChildProcess._handle.onexit (internal/child_process.js:274:19)
    at onErrorNT (internal/child_process.js:469:16)
    at processTicksAndRejections (internal/process/task_queues.js:82:21)

Environment information

shell: /usr/bin/bash -e {0}
  env:
    pythonLocation: /opt/hostedtoolcache/Python/3.10.4/x64
    LD_LIBRARY_PATH: /opt/hostedtoolcache/Python/3.10.4/x64/lib
Framework Core: 3.15.0
Plugin: 6.2.2
SDK: 4.3.2

[pgrzesik]

Hello @dj-ash - it looks like an issue with serverless-python-requirements plugin and incompatibility of your Python installation with chosen runtime. You're using Python 3.8 runtime, while on CI machine you have Python 3.10 installed if I'm not mistaken. Why is that the case? Did you try using Python 3.8?

I'm going to move this to Discussions as it's not a bug or feature request

[sushi30]

I am also hitting this issue. I upgraded my runtime to python3.9 and it solved the issue 🤷‍♀️

[jermwatt]

Same issue / solution for me - make sure local runtime matches declared version in serverless.yml

[Warkanlock]

From 3.9 to 3.11 solved the issue 😕

[UponTheSky]

Choosing the right Python interpreter resolved this issue in my case. I used to meet this error when I accidentally use the global Python interpreter.