我正在編寫一個 for 循環(huán)，從 pytrends 包中獲取 Google Trends?，F在我希望 for 循環(huán)為它在關鍵字列表中找到的每個關鍵字創(chuàng)建一個數據框。但我希望數據幀以列表項的編號而不是列表中的實際字符串命名。現在這是我的代碼：from pytrends.request import TrendReqpytrend = TrendReq(hl='de', tz=390, retries=10, backoff_factor=0.5)keywords = ['foo', 'bar', 'dummy']for keyword in keywords:  try:    pytrend.build_payload(      kw_list=[keyword],      geo='DE',      timeframe = 'now 1-d')    gbl = globals()    gbl['df_'+[str(i) for i in range(len(keywords))]] = pytrend.interest_over_time()    gbl['df_'+[str(i) for i in range(len(keywords))]] = gbl['df_'+[str(i) for i in range(len(keywords))]].drop(labels=['isPartial'],axis='columns')    print(keyword + ' was succesfully pulled from Google Trends')  except Exception as e:    print(keyword + ' was not successfully pulled because of the following error: ' + str(e))    continue但不幸的是這給了我以下錯誤：foo was not successfully pulled because of the following error: can only concatenate str (not "list") to strbar was not successfully pulled because of the following error: can only concatenate str (not "list") to strdummy was not successfully pulled because of the following error: can only concatenate str (not "list") to str所以，我的問題是，如何獲取列表中的項目編號來創(chuàng)建df_0、df_1、df_2等？謝謝！