PyPlate

PyPlate

Run arbitrary Python code in your CloudFormation templates.

Basic Usage

Place Python code as a literal block anywhere in your template. The literal block will be replaced with the contents of the output variable defined in your code. There are several variables available to your code:

• params: dict containing the contents of the templateParameterValues
• template: dict containing the entire template
• account_id: AWS account ID
• region: AWS region

AWSTemplateFormatVersion: "2010-09-09"
Description: tests String macro functions
Parameters:
  Tags:
    Default: "Env=Prod,Application=MyApp,BU=ModernisationTeam"
    Type: "CommaDelimitedList"
Resources:
  S3Bucket:
    Type: "AWS::S3::Bucket"
    Properties:
      Tags: |
        #!PyPlate
        output = []
        for tag in params['Tags']:
           key, value = tag.split('=')
           output.append({"Key": key, "Value": value})
Transform: [PyPlate]

Author

Jay McConnell
Partner Solutions Architect
Amazon Web Services