code: def load_prices_from_csv_folder(folderpath, identifier_col, tz="UTC"):
      data = None
      for file in os.listdir(folderpath):
          if ".csv" not in file:
              continue
          raw = load_prices_from_csv(
              os.path.join(folderpath, file), identifier_col, tz
          )
          if data is None:
              data = raw
          else:
              data = pd.concat([data, raw], axis=1)
      return data
  
imports: import os
  import pandas
label_desc: Use image node_id 2 for calling a global function with example usage: load_prices_from_csv_folder(folderpath, identifier_col, tz) and returns: data