code: def get_file_root(self, csv_file_name):
      return os.path.splitext(csv_file_name)[0]
  
file_path: vowpal_wabbit/demo/cats/utility/preprocess_data.py
imports: import sys
  import getopt
  import os
  import csv
  import pandas
  import math
label_desc: Use image node_id 1 for calling the PreProcessCSVData obj's underlying member method code with example usage: obj.get_file_root(csv_file_name) and returns: os