Remove NoneType in results preprocessing

Author: awilliamson

utils/load_data_sets.py

@@ -88,6 +88,10 @@ def get_batch(self, batch_size):
     @staticmethod
     def from_positions_w_context(positions_w_context, is_test=False, extract_move_prob=False):
         positions, next_moves, results = zip(*positions_w_context)
+
+        # Remove None types to prevent error in wrt_result
+        results = [i for i in results if i.result is not None]
+
         extracted_features = bulk_extract_features(positions)
         if extract_move_prob:
             encoded_moves = np.asarray(next_moves)