02.S3 Object CRUD

Check object Exist

ef check_obj_exist(s3, bucketname, region, key):
    try:
        s3.head_object(Bucket=bucketname, Key=key)
        return True
    except ClientError as e:
        code = e.response.get("Error", {}).get("Code")
        if code in ("404", "NoSuchKey", "NotFound"):
            return False
        raise

Put/Update S3 objects

• Put (create) and Update are the same call in S3: put_object
• if Bucket is in a different region than your client, need region

def put_obj(s3, bucketname, region, key, body):
    
    s3.put_object(
        Bucket=bucketname,
        Key=key,
        Body=body
    )
    print(f"--- PUT {key} size: {len(body)} bytes ---")

Delete S3 objects

def delete_obj(s3, bucketname, region, key):
    if not check_obj_exist(s3, bucketname, region, key):
        print(f"--- Not exist: {key} ---")
        return
    
    s3.delete_object(Bucket=bucketname, Key=key)
    print(f"--- Delete {key} ---")