PUT gzip direkt in S3 in Python

import csv
import gzip
import io
import os
import boto3
import cx_Oracle

DB_HOST = os.environ.get('DB_HOST')
DB_PORT = os.environ.get('DB_PORT')
DB_USER = os.environ.get('DB_USER')
DB_PASS = os.environ.get('DB_PASS')
DB_SID = os.environ.get('DB_SID')

AWS_S3_BUCKET_NAME = 'hoge'

s3 = boto3.client('s3')


def lambda_handler(event, context):

    file_name = 'hoge.csv.gz'
    #Orakelverbindung
    connection = cx_Oracle.connect(DB_USER, DB_PASS, f'(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST={DB_HOST}) (PORT={DB_PORT}))(CONNECT_DATA=(SID={DB_SID})))')
    with connection:
        with connection.cursor() as cursor:
            sql = 'SELECT * FROM hoge'
            cursor.execute(sql)
            #Name der Tabellenspalte
            csv_header = [column_name[0] for column_name in cursor.description]

            bio = io.BytesIO()
            with gzip.GzipFile(fileobj=bio, mode='wb') as gzip_file:
                with io.TextIOWrapper(gzip_file, encoding='utf-8') as wrapper:
                    writer = csv.writer(wrapper, lineterminator='\n', quoting=csv.QUOTE_ALL)
                    writer.writerow(csv_header)
                    while 1:
                        csv_detail = cursor.fetchmany()
                        if len(csv_detail) == 0:
                            break
                        writer.writerows(csv_detail)
            bio.seek(0)
            s3.put_object(Bucket=AWS_S3_BUCKET_NAME, Body=bio, Key=file_name)

    return event

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