code: def calc_stockname_from_filename(filename):
      return filename.split("/")[-1].split(".csv")[0]
  
file_path: FinRL/finrl/meta/data_processors/func.py
imports: from __future__ import annotations
  import copy
  import datetime
  import os
  from datetime import date
  from datetime import timedelta
  from typing import List
  from typing import Tuple
  import numpy
  import pandas
label_desc: Use image node_id 1 for calling a global function with example usage: calc_stockname_from_filename(filename) and returns: filename