Issue #23865: close() methods in multiple modules now are idempotent and more
robust at shutdown. If needs to release multiple resources, they are released
even if errors are occured.
diff --git a/Lib/mailbox.py b/Lib/mailbox.py
index ba49753..3866953 100644
--- a/Lib/mailbox.py
+++ b/Lib/mailbox.py
@@ -719,10 +719,14 @@
def close(self):
"""Flush and close the mailbox."""
- self.flush()
- if self._locked:
- self.unlock()
- self._file.close() # Sync has been done by self.flush() above.
+ try:
+ self.flush()
+ finally:
+ try:
+ if self._locked:
+ self.unlock()
+ finally:
+ self._file.close() # Sync has been done by self.flush() above.
def _lookup(self, key=None):
"""Return (start, stop) or raise KeyError."""