Fix: Correct ImportError and NameError in test_warnings

Author: heliang

Lib/test/test_warnings/__init__.py

@@ -14,6 +14,8 @@
 from test.support import import_helper
 from test.support import os_helper
 from test.support import warnings_helper
+from test.support import script_helper
+from _pyrepl.completing_reader import stripcolor as strip_ansi
 from test.support import force_not_colorized
 from test.support.script_helper import assert_python_ok, assert_python_failure
 
@@ -771,8 +773,8 @@ def test_improper_input(self):
             self.assertRaises(UserWarning, self.module.warn, 'convert to error')
 
     def test_import_from_module(self):
-        with support.temp_dir() as script_dir:
-            script = support.script_helper.make_script(script_dir,
+        with os_helper.temp_dir() as script_dir:
+            script = script_helper.make_script(script_dir,
                 'test_warnings_importer',
                 'import test.test_warnings.data.import_warning')
             rc, out, err = assert_python_ok(script)
@@ -788,15 +790,15 @@ def func(self):
             """)
         # The name of the script is 'test_sw'
         with os_helper.temp_dir() as script_dir:
-            script_name = support.script_helper.make_script(script_dir, 'test_sw', code)
+            script_name = script_helper.make_script(script_dir, 'test_sw', code)
             # We want to check that the warning filter for 'test_sw' module works.
             rc, out, err = assert_python_failure("-W", "error::SyntaxWarning:test_sw",
                                                  script_name)
         self.assertEqual(rc, 1)
         self.assertEqual(out, b'')
         # Check that we got a SyntaxError.
         err = err.decode()
-        err = support.strip_ansi(err)
+        err = strip_ansi(err)
         self.assertIn("""SyntaxError: "is" with 'int' literal. Did you mean "=="?""", err)
         # Check that the filename in the traceback is correct.
         self.assertIn(os.path.basename(script_name), err)