Having trouble running lambda functions for slack bot/app with Python 3.8

DevOps AWS
#1

Interesting… Anyone had issues running lambda functions (python 3.8) for slack bot/app? My code works fine locally. I only had to pip install slackclient and in my code I can use import slack and it works fine. But when trying that with aws lambda, it fails with "errorMessage": "Unable to import module 'handler': No module named 'slack'". I already tried to include in my requirements.txt the following: slackclient==2.9.4 (fails), slack-sdk==3.27.1 (fails) and slack which also fails… they all return with that same error.

#2

You could try debugging by downloading the lambda that was uploaded and checking for the existance of this package. It may not be getting packaged correctly

#3

considering all are failing, it seems like no external dependencies are being packaged

#4

what are you using to deploy the lambda?

#5

let me try downloading my lambda function as you said to see if it was packaged properly

#6

Ah you may not being using the plugin to package dependencies

#7

https://www.serverless.com/examples/aws-python

#8

serverless plugin install -n serverless-python-requirements

#9

and it’s in my serverless.yaml

#10 

frameworkVersion: '3'

provider:
  name: aws
  runtime: python3.8

functions:
  hello:
    handler: handler.hello
    events:
      - httpApi:
          path: /hello
          method: post

plugins:
  - serverless-python-requirements

custom:
  pythonRequirements:
    dockerizePip: true
    layer:
      name: python-slack```
#11

Your dependency is within a layer? is the layer attached to the function?

#12

sorry, I’m trying serverless for the first time… so also still getting used to it

#13

let. mesee how to check that…

#14

BUT… now that you said that…

#15

checking on aws lambda… I see Layers (0)

#16

I think that layer is probably going to overcomplicate this. Why not just install slack dependency within your main app?

#17

right, let me try that

#18

would it be just a matter of commenting out the lines layer and name, right!? based on what I see in the docs here: https://www.serverless.com/plugins/serverless-python-requirements

#19

just keeping the custom block with the pythonrequirements

#20

let me give it a try… and thanks by the way