docstr: Return data that meets the minimum requirements of tsdata.
docstr_tok: ["Return","data","that","meets","the","minimum","requirements","of","tsdata","."]
code: def preprocess_nyc_taxi(self):
      """
      Return data that meets the minimum requirements of tsdata.
      """
      raw_csv_name = os.path.join(
          self.dir_path, DATASET_NAME[self.name][0]
      )
      if not os.path.exists(self.final_file_path):
          with open(raw_csv_name, "rb") as src, open(
              self.final_file_path, "wb"
          ) as dst:
              dst.write(src.read())
      self.df = pd.read_csv(
          self.final_file_path, parse_dates=["timestamp"]
      )
      return self
  
file_path: analytics-zoo/pyzoo/zoo/chronos/data/utils/public_dataset.py
imports: import os
  import requests
  import tqdm
  import pandas
  from zoo.chronos.data.tsdataset import TSDataset
label_desc: Use image node_id 6 for calling the PublicDataset obj's underlying member method code with example usage: obj.preprocess_nyc_taxi() and returns: self