backwards compatibility

Author: huettenhain

refinery/lib/zip.py

@@ -11,7 +11,7 @@
 import zlib
 
 from datetime import datetime
-from typing import Iterable, NamedTuple, Self
+from typing import NamedTuple, TYPE_CHECKING
 
 from Cryptodome.Cipher import AES, ARC2, ARC4, DES, DES3, Blowfish
 from Cryptodome.Hash import HMAC, SHA1
@@ -26,6 +26,9 @@
 from refinery.lib.types import buf
 from refinery.units.misc.datefix import datefix
 
+if TYPE_CHECKING:
+    from typing import Self, Iterable
+
 
 class PasswordRequired(Exception):
     pass