Simplify and update comments for simplified check

Author: cmaloney

Doc/library/zipfile.rst

@@ -286,9 +286,9 @@ ZipFile objects
       metadata in the zipfile's directory and file headers.
 
    .. versionchanged:: next
-      Deleting a :class:`zipfile.ZipFile` which contains unwritten data before
-      it is closed now emits a :exc:`ResourceWarning`. Use as a
-      :term:`context manager` or call :meth:`~zipfile.ZipFile.close` explicitly.
+      Deleting a writable, open :class:`zipfile.ZipFile` now emits a
+      :exc:`ResourceWarning`. Use as a :term:`context manager` or call
+      :meth:`~zipfile.ZipFile.close` explicitly.
 
 .. method:: ZipFile.close()
 

Lib/zipfile/__init__.py

@@ -2617,9 +2617,8 @@ def mkdir(self, zinfo_or_directory_name, mode=511):
 
     def __del__(self):
         """Call the "close()" method in case the user forgot."""
-        # gh-81954: Warn if ZipFile is implicitly closed with unwritten end
-        # records. GC cleanup order is non-deterministic and can result in data
-        # loss.
+        # gh-81954: Warn if writable ZipFile is implicitly closed.
+        # GC cleanup order is non-deterministic and can result in data loss.
         if self.fp is not None and self.mode in ('w', 'x', 'a'):
             warnings.warn(f"unclosed ZipFile {self!r}",
                           ResourceWarning, source=self, stacklevel=2)

Misc/NEWS.d/next/Library/2026-06-26-16-15-55.gh-issue-81954.MfUjgS.rst

@@ -1,3 +1,3 @@
-Deleting a :class:`zipfile.ZipFile` which contains unwritten data before it
-is closed now emits a :exc:`ResourceWarning`. Use as a :term:`context manager`
+Deleting a writable, open :class:`zipfile.ZipFile` now emits a
+:exc:`ResourceWarning`. Use as a :term:`context manager`
 or call :meth:`~zipfile.ZipFile.close` explicitly.