[FIXED] Import libraries in lambda layers

Issue

I wanted to import jsonschema library in my AWS Lambda in order to perform request validation. Instead of bundling the dependency with my app , I am looking to do this via Lambda Layers. I zipped all the dependencies under venv/lib/python3.6/site-packages/. I uploaded this as a lambda layer and added it to my aws lambda using publish-layer-version and aws lambda update-function-configuration commands respectively. The zip folder is name "lambda-dep.zip" and all the files are under it. However when I try to import jsonschema in my lambda_function , I see the error below -

from jsonschema import validate

{
  "errorMessage": "Unable to import module 'lambda_api': No module named 'jsonschema'",
  "errorType": "Runtime.ImportModuleError"
}

Am I missing any steps are is there a different mechanism to import anything within lambda layers?

Solution

You want to make sure your .zip follows this folder structure when unzipped

python/lib/python3.6/site-packages/{LibrariesGoHere}.

Upload that zip, make sure the layer is added to the Lambda function and you should be good to go.

This is the structure that has worked for me.

Answered By - guitarhero23