Issue #26637: Fix test_io
The import machinery now raises a different exception when it fails at Python
shutdown.
diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py
index 86440c5..37b9b2d 100644
--- a/Lib/test/test_io.py
+++ b/Lib/test/test_io.py
@@ -3079,8 +3079,7 @@
class PyTextIOWrapperTest(TextIOWrapperTest):
io = pyio
- #shutdown_error = "LookupError: unknown encoding: ascii"
- shutdown_error = "TypeError: 'NoneType' object is not iterable"
+ shutdown_error = "LookupError: unknown encoding: ascii"
class IncrementalNewlineDecoderTest(unittest.TestCase):