code: def __init__(self, filename=None, nrows=None):
      self.filename = filename
      self.maybe_download()
      self.dataframe = pd.read_csv(self.filename, nrows=nrows).dropna()
  
file_path: finetune/finetune/datasets/__init__.py
imports: import hashlib
  from io import StringIO
  import os.path
  from pathlib import Path
  import requests
  import pandas
label_desc: Use image node_id 1 to create a new Dataset object  with example: obj = Dataset(filename, nrows)