bpo-41069: Make TESTFN and the CWD for tests containing non-ascii characters. (GH-21035)
diff --git a/Lib/test/test_fstring.py b/Lib/test/test_fstring.py
index 9eb7ebe..7ffe01d 100644
--- a/Lib/test/test_fstring.py
+++ b/Lib/test/test_fstring.py
@@ -1055,8 +1055,9 @@
file_path = os.path.join(cwd, 't.py')
with open(file_path, 'w') as f:
f.write('f"{a b}"') # This generates a SyntaxError
- _, _, stderr = assert_python_failure(file_path)
- self.assertIn(file_path, stderr.decode('utf-8'))
+ _, _, stderr = assert_python_failure(file_path,
+ PYTHONIOENCODING='ascii')
+ self.assertIn(file_path.encode('ascii', 'backslashreplace'), stderr)
def test_loop(self):
for i in range(1000):