bpo-43651: PEP 597: Fix EncodingWarning in some tests (GH-25189)

* Fix _sitebuiltins
* Fix test_inspect
* Fix test_interpreters
* Fix test_io
* Fix test_iter
* Fix test_json
* Fix test_linecache
* Fix test_lltrace
* Fix test_logging
* Fix logging

1 files changed, 4 insertions, 4 deletions

diff --git a/Lib/test/test_interpreters.py b/Lib/test/test_interpreters.py
index 8d44d49..6266aa7 100644
--- a/Lib/test/test_interpreters.py
+++ b/Lib/test/test_interpreters.py
@@ -14,11 +14,11 @@ def _captured_script(script):
     indented = script.replace('\n', '\n                ')
     wrapped = dedent(f"""
         import contextlib
-        with open({w}, 'w') as spipe:
+        with open({w}, 'w', encoding='utf-8') as spipe:
             with contextlib.redirect_stdout(spipe):
                 {indented}
         """)
-    return wrapped, open(r)
+    return wrapped, open(r, encoding='utf-8')
 
 
 def clean_up_interpreters():
@@ -411,7 +411,7 @@ class TestInterpreterRun(TestBase):
     def test_fork(self):
         interp = interpreters.create()
         import tempfile
-        with tempfile.NamedTemporaryFile('w+') as file:
+        with tempfile.NamedTemporaryFile('w+', encoding='utf-8') as file:
             file.write('')
             file.flush()
 
@@ -421,7 +421,7 @@ class TestInterpreterRun(TestBase):
                 try:
                     os.fork()
                 except RuntimeError:
-                    with open('{file.name}', 'w') as out:
+                    with open('{file.name}', 'w', encoding='utf-8') as out:
                         out.write('{expected}')
                 """)
             interp.run(script)