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_opcodes.py b/Lib/test/test_opcodes.py
index e510364..4be78a4 100644
--- a/Lib/test/test_opcodes.py
+++ b/Lib/test/test_opcodes.py
@@ -24,7 +24,7 @@ def test_try_inside_for_loop(self):
def test_setup_annotations_line(self):
# check that SETUP_ANNOTATIONS does not create spurious line numbers
try:
- with open(ann_module.__file__) as f:
+ with open(ann_module.__file__, encoding="utf-8") as f:
txt = f.read()
co = compile(txt, ann_module.__file__, 'exec')
self.assertEqual(co.co_firstlineno, 1)