bpo-43651: PEP 597: Fix EncodingWarning in some tests (GH-25142)
* test__xxsubinterpreters
* test_builtin
* test_doctest
* test_exceptions
* test_opcodes
* test_support
* test_argparse
* test_baseexception
* test_bdb
* test_bool
* test_asdl_parser
diff --git a/Lib/test/test_bool.py b/Lib/test/test_bool.py
index bec44d0..a3214c9 100644
--- a/Lib/test/test_bool.py
+++ b/Lib/test/test_bool.py
@@ -235,7 +235,7 @@ def test_boolean(self):
def test_fileclosed(self):
try:
- with open(os_helper.TESTFN, "w") as f:
+ with open(os_helper.TESTFN, "w", encoding="utf-8") as f:
self.assertIs(f.closed, False)
self.assertIs(f.closed, True)
finally: