Explain why ZipFile.__del__ wraps the warning in try/finally

Author: brittanyrey

Lib/zipfile/__init__.py

@@ -2651,6 +2651,8 @@ def __del__(self):
         # gh-81954: Warn if writable ZipFile is implicitly closed.
         # GC cleanup order is non-deterministic and can result in data loss.
         try:
+            # Wrap within a try to ensure the file is closed even if the
+            # warnings module is unable to load during finalization.
             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)