code: def get_symbols(data_1min_dir: Path):
      return list(
          map(
              lambda x: x.name[:-4].upper(), data_1min_dir.glob("*.csv")
          )
      )
  
file_path: qlib/scripts/data_collector/contrib/fill_cn_1min_data/fill_cn_1min_data.py
imports: import sys
  from pathlib import Path
  from concurrent.futures import ThreadPoolExecutor
  import fire
  import qlib
  import pandas
  from tqdm import tqdm
  from qlib.data import D
  from loguru import logger
  from data_collector.utils import generate_minutes_calendar_from_daily
label_desc: Use image node_id 2 for calling a global function with example usage: get_symbols(data_1min_dir) and returns: list