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import os
import time
import boto3
from boto3.session import Session


def lambda_handler(event, context):

	r = boto3.client("sts").assume_role(
		RoleArn = "<To Account Role ARN>",
		RoleSessionName = "sts",
	)

	s = Session(aws_access_key_id=r["Credentials"]["AccessKeyId"],
	    aws_secret_access_key=r["Credentials"]["SecretAccessKey"],
	    aws_session_token=r["Credentials"]["SessionToken"],
	    region_name=os.environ["AWS_REGION"])

	i = s.client("ssm").send_command(
		InstanceIds=["i-38877da6"],
		DocumentName="AWS-RunShellScript",
		Parameters={
			"commands": ["ls"],
			"executionTimeout": ["60"]
		}
	)
	
	time.sleep(10)

	print s.client("ssm").list_command_invocations(
		CommandId=i["Command"]["CommandId"],
		Details=True
	)