Improve formatting of comments etc.
diff --git a/metaopt/core/arg/util/creator.py b/metaopt/core/arg/util/creator.py
index 4ff02d0..b108417 100644
--- a/metaopt/core/arg/util/creator.py
+++ b/metaopt/core/arg/util/creator.py
@@ -20,13 +20,16 @@ class ArgsCreator(object):
         self.param_spec = param_spec

     def args(self, values=None):
-        """Returns an args derived from the params given on instantiation.Given values, uses values"""
-	param_values = self.param_spec.params.values()
-        if values == None:
+        """Returns an args derived from the params given on instantiation. Given
+         values, uses values"""
+        param_values = self.param_spec.params.values()
+
+        if values == None:
             return [create_arg(param) for param in param_values]
-	else:
-	    mapping = zip(param_values, values)
-            return [create_arg(param, value) for param, value in mapping]
+        else:
+            mapping = zip(param_values, values)
+
+        return [create_arg(param, value) for param, value in mapping]

     def random(self):
         """Returns a randomized version of self.args()."""
Add comment to GridSearchOptimizer
diff --git a/metaopt/optimizer/gridsearch.py b/metaopt/optimizer/gridsearch.py
index 227aafd..6f2e9c5 100644
--- a/metaopt/optimizer/gridsearch.py
+++ b/metaopt/optimizer/gridsearch.py
@@ -14,7 +14,7 @@ class GridSearchOptimizer(Optimizer):

     def __init__(self):
         super(GridSearchOptimizer, self).__init__()
-        self.best = (None, None)
+        self.best = (None, None) # (args, fitness)

     def optimize(self, invoker, param_spec, return_spec=None):
         del return_spec  # TODO