code: def choose_raw_dataset(currently=""):
      
      folder = os.path.join(get_project_root(), "raw-datasets")
      files = [os.path.join(folder, name) for name in os.listdir(folder)
               if name.endswith(".pickle")]
      default = -1
      for i, filename in enumerate(files):
          if os.path.basename(currently) == os.path.basename(filename):
              default = i
          if i != default:
              print("[%i]\t%s" % (i, os.path.basename(filename)))
          else:
              print("\033[1m[%i]\033[0m\t%s" % (i, os.path.basename(filename)))
      i = input_int_default("Choose a dataset by number: ", default)
      return files[i]
docs: Let the user choose a raw dataset. Return the absolute path.