Fix a bug in the script run.py

Author: Oxer11

script/run.py

@@ -28,7 +28,7 @@ def train_and_validate(cfg, solver):
         solver.save("model_epoch_%d.pth" % solver.epoch)
         solver.model.split = "valid"
         metric = solver.evaluate("valid")
-        result = metric[args.metric]
+        result = metric[cfg.metric]
         if result > best_result:
             best_result = result
             best_epoch = solver.epoch
@@ -60,4 +60,4 @@ def test(cfg, solver):
     solver = util.build_solver(cfg, dataset)
 
     train_and_validate(cfg, solver)
-    test(cfg, solver)
+    test(cfg, solver)