docs: change assert to raise and some small docs (#26232)

* docs: change assert to raise and some small docs

* docs: add rule and some document

* fix: fix bug

* fix: fix bug

* chorse: revert logging

* chorse: revert

examples/pytorch/language-modeling/run_clm_no_trainer.py

@@ -246,13 +246,16 @@ def parse_args():
     else:
         if args.train_file is not None:
             extension = args.train_file.split(".")[-1]
-            assert extension in ["csv", "json", "txt"], "`train_file` should be a csv, json or txt file."
+            if extension not in ["csv", "json", "txt"]:
+                raise ValueError("`train_file` should be a csv, json or txt file.")
         if args.validation_file is not None:
             extension = args.validation_file.split(".")[-1]
-            assert extension in ["csv", "json", "txt"], "`validation_file` should be a csv, json or txt file."
+            if extension not in ["csv", "json", "txt"]:
+                raise ValueError("`validation_file` should be a csv, json or txt file.")
 
     if args.push_to_hub:
-        assert args.output_dir is not None, "Need an `output_dir` to create a repo when `--push_to_hub` is passed."
+        if args.output_dir is None:
+            raise ValueError("Need an `output_dir` to create a repo when `--push_to_hub` is passed.")
 
     return args
 

examples/pytorch/language-modeling/run_mlm_no_trainer.py

@@ -261,7 +261,8 @@ def parse_args():
                 raise ValueError("`validation_file` should be a csv, json or txt file.")
 
     if args.push_to_hub:
-        assert args.output_dir is not None, "Need an `output_dir` to create a repo when `--push_to_hub` is passed."
+        if args.output_dir is None:
+            raise ValueError("Need an `output_dir` to create a repo when `--push_to_hub` is passed.")
 
     return args
 
@@ -694,7 +695,7 @@ def main():
         except OverflowError:
             perplexity = float("inf")
 
-        logger.info(f"epoch {epoch}: perplexity: {perplexity}")
+        logger.info(f"epoch {epoch}: perplexity: {perplexity} eval_loss: {eval_loss}")
 
         if args.with_tracking:
             accelerator.log(