from boto.s3.connection import S3Connectionfrom boto.s3.key import KeyS3_ACCESS_ID = "xxxxxxxxxxxxxxxxxxxxx"S3_SECRET_ACCESS_KEY = "yyyyyyyyyyyyyyyyyyyyyyyyyy"def view_buckets():    """    Recupera una lista de los "buckets" en S3    """    #Nos conectamos a S3    c = S3Connection(aws_secret_access_key = S3_SECRET_ACCESS_KEY, aws_access_key_id=S3_ACCESS_ID)    # recuperamso los buckets    buckets= c.get_all_buckets()    c.close()    return bucketsdef get_keys_in_bucket(bucket_name):    """    Obtiene la lista de claves en un bucket    """    c = S3Connection(aws_secret_access_key = S3_SECRET_ACCESS_KEY, aws_access_key_id=S3_ACCESS_ID)    b = c.get_bucket(bucket_name)    keys = b.list()    return keysdef upload_file_to_bucket(bucket_name, file_name, s3_key):    """    Sube un fichero a un bucket    """    # Nos conectamos a s3    c = S3Connection(aws_secret_access_key = S3_SECRET_ACCESS_KEY, aws_access_key_id=S3_ACCESS_ID)    # Obtenemos el bucket    b = c.get_bucket(bucket_name)    # Subimos el fichero    k = Key(b)    k.key  = s3_key    k.set_contents_from_filename(file_name)