Bitbucket Pipeline publish to AWS Lambda with version

bitbucket-pipelines.yml

image: python:3.5.1

pipelines:
  default:
    - step:
        script:  # Modify the commands below to build and test your repository.
          - apt-get update
          - apt-get install -y zip
          - zip -r $BITBUCKET_REPO_SLUG".zip" *
          - pip install awscli
          - alias=`aws lambda get-alias --function-name $FunctionName --name $BITBUCKET_BRANCH || echo "{}"`
          - echo $alias
          - set=`echo $alias | python -c 'import sys,json;obj=json.load(sys.stdin);print("update-alias" if obj.get("FunctionVersion",False) else "create-alias");'`
          - echo $set
          - updated=`aws lambda update-function-code --function-name $FunctionName --publish --zip-file fileb://$BITBUCKET_REPO_SLUG".zip" || echo "{}"`
          - echo $updated
          - version=`echo $updated | python -c 'import sys,json;obj=json.load(sys.stdin);print(obj.get("Version","\$LATEST"));'`
          - echo $version
          - aws lambda $set --function-name $FunctionName --function-version $version --name $BITBUCKET_BRANCH