Bien démarrer avec Amazon S3 et Python

S3.py

import logging
import boto3
from botocore.exceptions import ClientError

def upload_file(file_name, bucket, object_name=None):
    """Upload a file to an S3 bucket

    :param file_name: File to upload
    :param bucket: Bucket to upload to
    :param object_name: S3 object name. If not specified then file_name is used
    :return: True if file was uploaded, else False
    """

    # If S3 object_name was not specified, use file_name
    if object_name is None:
        object_name = file_name

    # Upload the file
    s3_client = boto3.client('s3')
    try:
        response = s3_client.upload_file(file_name, bucket, object_name)
    except ClientError as e:
        logging.error(e)
        return False
    return True

def download_file(file_name, bucket_name, object_name):
    s3 = boto3.client('s3')
    s3.download_file(bucket_name, object_name, file_name)

print("downloading demo.jpg")
download_file("demo.jpg", "demo-bien-demarrer", "barcelona.jpg")