Issue #25364: zipfile now works in threads disabled builds.

Lib/zipfile.py

@@ -13,8 +13,11 @@ import stat
 import shutil
 import struct
 import binascii
-import threading
 
+try:
+    import threading
+except ImportError:
+    import dummy_threading as threading
 
 try:
     import zlib # We may need its compression method

Misc/NEWS

@@ -40,6 +40,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #25364: zipfile now works in threads disabled builds.
+
 - Issue #25328: smtpd's SMTPChannel now correctly raises a ValueError if both
   decode_data and enable_SMTPUTF8 are set to true.