docs: def get_stock_codes(realtime=False):
      """获取所有股票 ID 到 all_stock_code 目录下"""
      if realtime:
          all_stock_codes_url = "http://www.shdjt.com/js/lib/astock.js"
          grep_stock_codes = re.compile(r"~(\d+)`")
          response = requests.get(all_stock_codes_url)
          stock_codes = grep_stock_codes.findall(response.text)
          with open(stock_code_path(), "w") as f:
              f.write(json.dumps(dict(stock=stock_codes)))
          return stock_codes
  
      with open(stock_code_path()) as f:
          return json.load(f)["stock"]