diff --git a/py/raunet.py b/py/raunet.py
index 68bf331..6b73058 100644
--- a/py/raunet.py
+++ b/py/raunet.py
@@ -2,7 +2,6 @@ from __future__ import annotations
 
 import itertools
 import os
-import sys
 from dataclasses import dataclass
 from typing import TYPE_CHECKING, Any, NamedTuple