address pr comments

Signed-off-by: Brian Chen <[email protected]>

ros2param/ros2param/verb/set.py

@@ -35,7 +35,6 @@ class RequireParameterPairAction(argparse.Action):
     def __call__(self, parser, args, values, option_string=None):
         if len(values) == 0:
             parser.error('No parameters specified')
-            SystemExit(2)
         if len(values) % 2:
             parser.error('Must provide parameter name and value pairs')
         setattr(args, self.dest, values)
@@ -61,21 +60,18 @@ def add_arguments(self, parser, cli_name):  # noqa: D102
 
     def build_parameters(self, params):
         parameters = []
-
         for i in range(0, len(params), 2):
             parameter = Parameter()
             parameter.name = params[i]
             parameter.value = get_parameter_value(string_value=params[i+1])
             parameters.append(parameter)
-
         return parameters
 
     def main(self, *, args):  # noqa: D102
         with NodeStrategy(args) as node:
             node_names = get_node_names(
                 node=node, include_hidden_nodes=args.include_hidden_nodes)
         node_name = get_absolute_node_name(args.node_name)
-
         if node_name not in {n.full_name for n in node_names}:
             return 'Node not found'