Kaggarwal/add llama notebooks (#2576)

* Add text-classification notebook for llama

* Change description

sdk/python/foundation-models/system/finetune/Llama-notebooks/text-classification/download-dataset.py

@@ -0,0 +1,58 @@
+# import library to parse command line arguments
+import argparse, os
+
+parser = argparse.ArgumentParser()
+# add an argument to specify a dataset name to download
+parser.add_argument(
+    "--dataset", type=str, default="dair-ai/emotion", help="dataset name"
+)
+# add an argument to specify a dataset name to download
+parser.add_argument(
+    "--dataset_subset", type=str, default="split", help="dataset subset name"
+)
+# add an argument to specify the directory to download the dataset to
+parser.add_argument(
+    "--download_dir",
+    type=str,
+    default="data",
+    help="directory to download the dataset to",
+)
+args = parser.parse_args()
+
+# create the download directory if it does not exist
+if not os.path.exists(args.download_dir):
+    os.makedirs(args.download_dir)
+
+
+# import hugging face datasets library
+from datasets import load_dataset, get_dataset_split_names
+from functools import partial
+
+for split in get_dataset_split_names(args.dataset):
+    # load the split of the dataset
+    dataset = load_dataset(args.dataset, split=split)
+    # save the split of the dataset to the download directory as json lines file
+    dataset.to_json(os.path.join(args.download_dir, f"{split}.jsonl"))
+    # print dataset features
+
+# get label2id and id2label mapping
+
+# get any split of data
+split = get_dataset_split_names(args.dataset)[0]
+dataset = load_dataset(args.dataset, split=split)
+
+labels = dataset.features["label"].names
+
+id2label = {}
+label2id = {}
+
+for i, label in enumerate(labels):
+    id2label[i] = label
+    label2id[label] = i
+
+label_mapping = {"id2label": id2label, "label2id": label2id}
+
+import json
+
+with open(os.path.join(args.download_dir, "label.json"), "w") as f:
+    json.dump(label_mapping, f)