app.py

from datasets import load_dataset
raw_datasets = load_dataset("allocine")
raw_datasets.save_to_disk("my-arrow-datasets")



from datasets import load_from_disk
arrow_datasets_reloaded = load_from_disk("my-arrow-datasets")
arrow_datasets_reloaded



for split, dataset in raw_datasets.items():
  dataset.to_csv(f"my-dataset-{split}.csv", index=None)
  
data_files = { 
  "train": "my-dataset-train.csv",
  "validation": "my-dataset-validation.csv",
  "test": "my-dataset-test.csv",
}

csv_datasets_reloaded = load_dataset("csv", data_files=data_files)
csv_datasets_reloaded


for split, dataset in raw_datasets.items():
  dataset.to_json(f"my-dataset-{split}.jsonl")
  
for split, dataset in raw_datasets.items():
  dataset.to_parquet(f"my-dataset-{split}.parquet")
  

json_data_files = { 
  "train": "my-dataset-train.jsonl",
  "validation": "my-dataset-validation.jsonl",
  "test": "my-dataset-test.jsonl",
}
parquet_data_files = { 
  "train": "my-dataset-train.parquet",
  "validation": "my-dataset-validation.parquet",
  "test": "my-dataset-test.parquet",
}

json_datasets_reloaded = load_dataset("json", data_files=json_data_files)
parquet_datasets_reloaded = load_dataset("parquet", data_files=parquet_data_files)