Fix BlacklistAction bug

This bug would have caused an error if BlacklistAction were used with a
different nargs.

The "verbose" argument no longer has a default specified. Instead, the
code that checks it supplies a default for itself.

bonemarketsolver/__main__.py

@@ -106,7 +106,6 @@ solver_options = parser.add_argument_group(
 solver_options.add_argument(
         "-v", "--verbose",
         action=argparse.BooleanOptionalAction,
-        default=False,
         help="whether the solver should output search progress rather than showing intermediate solutions",
         dest='verbose'
         )
@@ -130,7 +129,7 @@ args = parser.parse_args()
 
 arguments = vars(args)
 
-if not arguments.pop('verbose'):
+if not arguments.pop('verbose', False):
     def WrappedSolve(stdscr, arguments):
         # Prevents crash if window is too small to fit text
         stdscr.scrollok(True)

bonemarketsolver/objects/blacklistaction.py

@@ -29,7 +29,7 @@ class BlacklistAction(argparse.Action):
         # Check whether this is a single value or a list of them
         if self._nargs is None or self._nargs == argparse.OPTIONAL:
             # Convert value back into an Enum
-            enum = convert_to_enum(value)
+            enum = convert_to_enum(values)
 
             setattr(namespace, self.dest, enum)
         else: