improve indendation to make things more readable

mace/tools/train.py

@@ -455,6 +455,7 @@ def validate_and_checkpoint(
     )
     if "ScheduleFree" in type(optimizer).__name__:
         optimizer.eval()
+
     with param_context:
         valid_loss = 0.0
         wandb_log_dict = {}
@@ -487,50 +488,54 @@ def validate_and_checkpoint(
         valid_loss = (
             valid_loss_head  # consider only the last head for the checkpoint
         )
+
     if log_wandb:
         import wandb
         wandb.log(wandb_log_dict)
-    if rank == 0:
-        if valid_loss >= lowest_loss:
-            patience_counter += 1
-            if patience_counter >= patience:
-                if swa is not None and epoch < swa.start:
-                    logging.info(
-                        f"Stopping optimization after {patience_counter} epochs without improvement and starting Stage Two"
-                    )
-                    epoch = swa.start
-                else:
-                    logging.info(
-                        f"Stopping optimization after {patience_counter} epochs without improvement"
-                    )
-                    return True, epoch, lowest_loss, patience_counter
-            if save_all_checkpoints:
-                param_context = (
-                    ema.average_parameters()
-                    if ema is not None
-                    else nullcontext()
+
+    if rank != 0:
+        return False, epoch, lowest_loss, patience_counter
+
+    if valid_loss >= lowest_loss:
+        patience_counter += 1
+        if patience_counter >= patience:
+            if swa is not None and epoch < swa.start:
+                logging.info(
+                    f"Stopping optimization after {patience_counter} epochs without improvement and starting Stage Two"
                 )
-                with param_context:
-                    checkpoint_handler.save(
-                        state=CheckpointState(model, optimizer, lr_scheduler),
-                        epochs=epoch,
-                        keep_last=True,
-                    )
-        else:
-            lowest_loss = valid_loss
-            patience_counter = 0
+                epoch = swa.start
+            else:
+                logging.info(
+                    f"Stopping optimization after {patience_counter} epochs without improvement"
+                )
+                return True, epoch, lowest_loss, patience_counter
+        if save_all_checkpoints:
             param_context = (
-                ema.average_parameters() if ema is not None else nullcontext()
+                ema.average_parameters()
+                if ema is not None
+                else nullcontext()
             )
             with param_context:
                 checkpoint_handler.save(
                     state=CheckpointState(model, optimizer, lr_scheduler),
                     epochs=epoch,
-                    keep_last=keep_last,
+                    keep_last=True,
                 )
-                keep_last = False or save_all_checkpoints
+    else:
+        lowest_loss = valid_loss
+        patience_counter = 0
+        param_context = (
+            ema.average_parameters() if ema is not None else nullcontext()
+        )
+        with param_context:
+            checkpoint_handler.save(
+                state=CheckpointState(model, optimizer, lr_scheduler),
+                epochs=epoch,
+                keep_last=keep_last,
+            )
+            keep_last = False or save_all_checkpoints
 
-        return False, epoch, lowest_loss, patience_counter
+    return False, epoch, lowest_loss, patience_counter
 
 
 def evaluate(