powertools-lambda-python: Bug: v2.16.1 [ERROR] Runtime.ImportModuleError: Unable to import module 'src.generate_token': aws-lambda-powertools Traceback (most recent call last):

Expected Behaviour

Expected our lambdas to run normally with the new version of aws-lambda-powertools

Current Behaviour

We get errors on importing aws-lambda-powertools with v2.16.1, but v2.15.0 works fine.

We experienced errors on all of our lambdas that use aws-lambda-powertools with 2.16.1. We import ‘aws_lambda_powertools’ in a requirements.txt file in a layer.

Then we attach that layer to a lambda. The lambda calls import like this ‘’’ from aws_lambda_powertools import Logger ‘’’

This is where we get the failure: ‘’’ [ERROR] Runtime.ImportModuleError: Unable to import module ‘src.generate_token’: aws-lambda-powertools Traceback (most recent call last): ‘’’

There is no other information, and it is really difficult to tell why it is failing. But pinning the requirements.txt file to 2.15.0 fixed everything.

Code snippet

'''
from aws_lambda_powertools import Logger
'''

Possible Solution

Roll back to 2.15.0

Steps to Reproduce

• Create a requirements.txt file with aws_lambda_powertools (note: we use underscores here but have seen it different in different places. We did try with dashes, but experienced failure)
• Create a Lambda Layer with the requirements.txt file
• Create a Lambda that uses the Layer
• Import aws_lambda_powertools Logger (from aws_lambda_powertools import Logger)

Powertools for AWS Lambda (Python) version

latest

AWS Lambda function runtime

3.9

Packaging format used

Lambda Layers

Debugging logs

No response