Reboot an ec2 instance using python and boto3

reboot_ec2.py

# -*- coding: utf-8 -*-
##############################################
# Reboot an ec2 instance using python and boto3
#
# Boto3 Documenation Reference: 
# https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/ec2.html#EC2.Client.reboot_instances
##############################################
import boto3

s3 = boto3.client(
    'ec2',
    # best stored keys in environmental variables
    aws_access_key_id=S3_KEY,
    aws_secret_access_key=S3_SECRET_ACCESS_KEY,
)

my_ec2_instance_id = '' # add ec2 instance id but also best stored in env

def reboot_ec2(ec2_instance_id):
    response = client.reboot_instances(
        InstanceIds=[
            ec2_instance_id,
        ],
        DryRun=True # change to fals to usd
    )
    return response

reboot_ec2(my_ec2_instance_id)

# RELATED: AWS - Using CloudWatch to trigger script on ec2 instance
# SEE: https://stackoverflow.com/a/41365623/609617