replace threw with raised (#16714)

Lib/pkgutil.py

@@ -503,7 +503,7 @@ def find_loader(fullname):
     except (ImportError, AttributeError, TypeError, ValueError) as ex:
         # This hack fixes an impedance mismatch between pkgutil and
         # importlib, where the latter raises other errors for cases where
-        # pkgutil previously threw ImportError
+        # pkgutil previously raised ImportError
         msg = "Error while finding loader for {!r} ({}: {})"
         raise ImportError(msg.format(fullname, type(ex), ex)) from ex
 

Lib/test/test_urllib2.py

@@ -1302,7 +1302,7 @@ class HandlerTests(unittest.TestCase):
                               )
 
     def test_basic_and_digest_auth_handlers(self):
-        # HTTPDigestAuthHandler threw an exception if it couldn't handle a 40*
+        # HTTPDigestAuthHandler raised an exception if it couldn't handle a 40*
         # response (http://python.org/sf/1479302), where it should instead
         # return None to allow another handler (especially
         # HTTPBasicAuthHandler) to handle the response.

Lib/test/test_winreg.py

@@ -277,7 +277,7 @@ class LocalWinregTests(BaseWinregTests):
 
     def test_long_key(self):
         # Issue2810, in 2.6 and 3.1 when the key name was exactly 256
-        # characters, EnumKey threw "WindowsError: More data is
+        # characters, EnumKey raised "WindowsError: More data is
         # available"
         name = 'x'*256
         try: