How to Instantiate AWS ES Connection using python elasticsearch_dsl

import boto3, os
from requests_aws4auth import AWS4Auth
from elasticsearch import RequestsHttpConnection
from elasticsearch_dsl import connections
def init_connection():
service = "es"
region = "us-west-2"
credentials = boto3.Session().get_credentials()
awsauth = AWS4Auth(
credentials.access_key,
credentials.secret_key,
region,
service,
session_token=credentials.token,
)
connections.configure(
default={
"hosts": [{"host": os.environ["ES_ENDPOINT"], "port": 443,}],
"http_auth": awsauth,
"use_ssl": True,
"verify_certs": True,
"connection_class": RequestsHttpConnection,
}
)
connections.get_connection()  # Checks if conn already exists if not creates a new one

from elasticsearch_dsl import Document, Date, Text, Integer, Nested
class Tweet(Document):
  class Index:
     name = "index-tweet"

  created_at = Date(default_timezone="UTC")
  body = Text()
  favorites = Integer()
  retweets = Integer()

init_connection() # See above
tweet = Tweet(body="My first tweet", favorites=5, retweets=10)
tweet.save()