commit 469734b996915d2257639a671715539ad42e2576
author Guido van Rossum <guido@python.org> Tue Jul 10 12:00:45 2007 +0000
committer Guido van Rossum <guido@python.org> Tue Jul 10 12:00:45 2007 +0000
tree a96f42f66959e129766ca4c61e36a5912b98ea97
parent 47f17d01751f0b8186d6e08f4019f5b1bacf9512

Set closed flag *after* calling flush().

Lib/io.py

diff --git a/Lib/io.py b/Lib/io.py
index 72c9e17..ed94665 100644
--- a/Lib/io.py
+++ b/Lib/io.py
@@ -227,8 +227,10 @@
         'closed' property (see below) to test.
         """
         if not self.__closed:
-            self.__closed = True
-            self.flush()
+            try:
+                self.flush()
+            finally:
+                self.__closed = True
 
     def __del__(self) -> None:
         """Destructor.  Calls close()."""