docs: def create_csv(filename, csv_data, mode="w"):
      """
      Create a CSV file with the given data and store it in the
      file with the given name.
  
      :param filename: name of the file to store the data in
      :pram csv_data: the data to be stored in the file
      :param mode: the mode in which we have to open the file. It can
                   be 'w', 'a', etc. Default is 'w'
      """
  
      with open(filename, mode) as f:
          csv_data.replace("_", r"\_")
          f.write(csv_data)