Removed XXX from unittest.mock docstring and switch to a nicer try...except...finally

Lib/unittest/mock.py

@@ -619,9 +619,7 @@ class NonCallableMock(Base):
 
 
     def __dir__(self):
-        """Filter the output of `dir(mock)` to only useful members.
-        XXXX
-        """
+        """Filter the output of `dir(mock)` to only useful members."""
         extras = self._mock_methods or []
         from_type = dir(type(self))
         from_dict = list(self.__dict__)
@@ -1057,12 +1055,9 @@ class _patch(object):
 
         @wraps(func)
         def patched(*args, **keywargs):
-            # could use with statement here
             extra_args = []
             entered_patchers = []
 
-            # could use try..except...finally here
-            try:
             try:
                 for patching in patched.patchings:
                     arg = patching.__enter__()