Add tearDown for _colorize.can_colorize modification in test_argparse

Author: tpburns

Lib/test/test_argparse.py

@@ -7107,9 +7107,13 @@ class TestColorized(TestCase):
     def setUp(self):
         super().setUp()
         # Ensure color even if ran with NO_COLOR=1
+        self.original_can_colorize = _colorize.can_colorize
         _colorize.can_colorize = lambda *args, **kwargs: True
         self.theme = _colorize.get_theme(force_color=True).argparse
 
+    def tearDown(self):
+        _colorize.can_colorize = self.original_can_colorize
+
     def test_argparse_color(self):
         # Arrange: create a parser with a bit of everything
         parser = argparse.ArgumentParser(