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A small package that simplifies developing AWS Lambda functions locally

Project description


A simple interface wrapped around a boto3 lambda client, lambdev simplifies testing, deploying, and versioning AWS lambda functions from your local development environment.


pip install lambdev


AWS credentials

Please refer to the boto3 documentation on configuring your aws credentials. Best option when working with lambdev is to store your credentials (AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY) and region (AWS_DEFAULT_REGION) as environment variables.

create .lambdevignore.txt

create a file called .lambdevignore.txt where you can list the names of files and directories that are in your project folder that you would like to exclude from your lambda function deployment package.

for example:


All hidden files (names that start with .) are ignored by default (ie .gitignore) and do not need to be added to the ignore file.


simply run the lambdev functions from the root directory of your AWS lambda function project folder.

Available functions:
  1. lambdev.create()
    • creates a new lambda function by uploading a deployment package from the non-ignored files in the working directory. Saves new function ARN in $WORKINGDIR/function_name.txt.
  2. lambdev.test()
    • uploads non-ignored code in working dir to lambda function $latest channel, invokes it, and returns log.
  3. lambdev.publish()
    • publishes code in $latest and updates input alias to point to new version.


Example files can be found here

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