Improper type for __package__ should raise TypeError, not ValueError.

Lib/importlib/_bootstrap.py

@@ -926,7 +926,7 @@ def _sanity_check(name, package, level):
         raise ValueError('level must be >= 0')
     if package:
         if not isinstance(package, str):
-            raise ValueError("__package__ not set to a string")
+            raise TypeError("__package__ not set to a string")
         elif package not in sys.modules:
             msg = ("Parent module {0!r} not loaded, cannot perform relative "
                    "import")

Lib/importlib/test/import_/test___package__.py

@@ -67,7 +67,7 @@ class Using__package__(unittest.TestCase):
 
     def test_bunk__package__(self):
         globals = {'__package__': 42}
-        with self.assertRaises(ValueError):
+        with self.assertRaises(TypeError):
             import_util.import_('', globals, {}, ['relimport'], 1)