Lambda for pushing URL to S3

download_to_s3.py

import boto3
import botocore.vendored.requests.packages.urllib3 as urllib3

def lambda_handler(event, context):

    url=event.url
    bucket = event.s3_bucket_name
    key = event.s3_key

    s3=boto3.client('s3')
    http=urllib3.PoolManager()
    s3.upload_fileobj(http.request('GET', url,preload_content=False), bucket, key)