#!/usr/bin/env python3

import boto3


def main():
    client = boto3.client('lambda')
    paginator1 = client.get_paginator('list_functions')
    page_iterator1 = paginator1.paginate()
    for page in page_iterator1:
        for lambda_function in page['Functions']:
            function_arn = lambda_function['FunctionArn']
            function_tags = client.list_tags(Resource=function_arn)
            tag_keys = [k for k in function_tags['Tags']] if 'Tags' in function_tags else []
            if len(tag_keys) != 0 and 'plat_env_project_service' not in tag_keys:
                print(f'function without tag: {function_arn}')


if __name__ == '__main__':
    main()