ec2assumeRole.py

    ec2Client = boto3.Session(
    region_name=awsAccounts[awsAccount]["region"],
    aws_access_key_id=ACCESS_KEY,
    aws_secret_access_key=SECRET_KEY,
    aws_session_token=SESSION_TOKEN
        ).client('ec2')
    
    for env in awsAccounts[awsAccount]['envs']:
        instancesByEnv[env] = {}
        filters = [{'Name':'tag:Name', 'Values':[env+'*']}]
        instances = ec2Client.describe_instances(
            Filters=filters
        )
        for reservation in instances['Reservations']:
            for instance in reservation['Instances']:
                if instance['State']['Name'] != 'terminated':
                    ip = instance['PrivateIpAddress']
                    for tag in instance['Tags']:
                        if tag['Key'] == "Name":
                            instancesByEnv[env][tag['Value']] = ip