Issue #19447: Suppress output of py_compile.compile().

Lib/test/test_py_compile.py

@@ -94,6 +94,7 @@ class PyCompileTests(unittest.TestCase):
 
     def test_bad_coding(self):
         bad_coding = os.path.join(os.path.dirname(__file__), 'bad_coding2.py')
+        with support.captured_stderr():
             self.assertIsNone(py_compile.compile(bad_coding, doraise=False))
         self.assertFalse(os.path.exists(
             importlib.util.cache_from_source(bad_coding)))