bpo-43651: PEP 597: Fix EncodingWarning in some tests (GH-25145)
* test_asyncio
* test_bz2
* test_math
* test_cmath
* test_cmd_line
* test_cmd_line_script
* test_compile
* test_contextlib
* test_profile
* ctypes/test/test_find
* test_multiprocessing
* test_configparser
* test_csv
* test_dbm_dumb
* test_decimal
* test_difflib
* os.fdopen() calls io.text_encoding() to emit EncodingWarning for right place.
diff --git a/Lib/test/test_profile.py b/Lib/test/test_profile.py
index 1bdf30a..7de7d52 100644
--- a/Lib/test/test_profile.py
+++ b/Lib/test/test_profile.py
@@ -115,7 +115,7 @@ def test_run_profile_as_module(self):
def test_output_file_when_changing_directory(self):
with temp_dir() as tmpdir, change_cwd(tmpdir):
os.mkdir('dest')
- with open('demo.py', 'w') as f:
+ with open('demo.py', 'w', encoding="utf-8") as f:
f.write('import os; os.chdir("dest")')
assert_python_ok(