in s3booster-snowball-v1.py [0:0]
def upload_mpu(key_name, mpu_id, data, index, parts):
part = s3_client.upload_part(Body=data, Bucket=bucket_name, Key=key_name, UploadId=mpu_id, PartNumber=index)
parts.append({"PartNumber": index, "ETag": part["ETag"]})
success_log.debug('parts list: %s' % str(parts))
return parts