This library isn't required for writing Python in the serverless, but it does make your life easier by handling things like environment variables for you.
import serverless_helpers
# all .env files are loaded into the environment
# This is optional if you are using serverless v0.5 or later, because it
# automatically loads variables without help
serverless_helpers.load_envs(__file__)
# Loads stack outputs into environment variables as `SERVERLESS_CF_[output name]`
serverless_helpers.load_cfn_outputs()
import os
os.getenv('SERVERLESS_STAGE') # dev
# get role ARN from default serverless CloudFormation stack
os.getenv('SERVERLESS_CF_IamRoleArnLambda') # arn:aws:iam::123456789012:....
# alternate way to read roles
outputs = serverless_helpers.load_cfn_outputs()
outputs['IamRoleArnLambda'] # arn:aws:iam::123456789012:....
This code is released under the MIT software license, see LICENSE file for details. No warranty of any kind is included, and the copyright notice must be included in redistributions.
Notable exception: dotenv.py is from
python-dotenv to remove
dependencies on click and ordereddict for performance/deployment size reasons.
Read the license contained in dotenv.py for details on its creators and
license conditions.