get_aws_info.py

import boto3

sts_client = boto3.client("sts")
session = boto3.session.Session()

account_id = sts_client.get_caller_identity()["Account"]
region = session.region_name
credentials = session.get_credentials()
credentials = credentials.get_frozen_credentials()

with open('vars.env', 'w') as f:
    f.write("AWS_ACCOUNT_ID=%s\n" % account_id)
    f.write("AWS_DEFAULT_REGION=%s\n" % region)
    f.write("AWS_ACCESS_KEY_ID=%s\n" % credentials.access_key)
    f.write("AWS_SECRET_ACCESS_KEY=%s\n" % credentials.secret_key)
    f.write("AWS_SESSION_TOKEN=%s\n" % credentials.token )
    f.close()