我寫了這段代碼，然后我在下面寫了一個錯誤。有一個 while 循環，它允許我獲取受 1000 列限制的數據，該時間與我在reapeat_rounds變量中描述的時間一樣長，但是當我試圖使用該循環時，會引發“keyerror：t”。如果我做reapeat_rounds = 0，我不會得到這樣的錯誤，但如果我這樣做，這意味著雖然循環不起作用，如果循環工作，我得到錯誤請幫助我解決該錯誤，謝謝。class Binance:    def __init__(self):        self.base = 'https://api.binance.com'        self.endpoints = {            "order": '/api/v3/order',            "testOrder": '/api/v3/order/test',            "allOrders": '/api/v3/allOrders',            "klines": '/api/v3/klines',            "exchangeInfo": '/api/v3/exchangeInfo'        }        self.headers = {"X-MBX-APIKEY": binance_keys['api_key']}    def GetLongerSymbolData(self, symbol:str, interval:str, limit:int=1000, end_time=False):        # Basicall, we will be calling the GetSymbolData as many times as we need         # in order to get all the historical data required (based on the limit parameter)        # and we'll be merging the results into one long dataframe.        repeat_rounds = 1        if limit > 1000:            repeat_rounds = int(limit/1000)        initial_limit = limit % 1000        if initial_limit == 0:            initial_limit = 1000        # First, we get the last initial_limit candles, starting at end_time and going        # backwards (or starting in the present moment, if end_time is False)        df = self.GetSymbolData(symbol, interval, limit=initial_limit, end_time=end_time)        while repeat_rounds > 0:            # Then, for every other 1000 candles, we get them, but starting at the beginning            # of the previously received candles.            df2 = self.GetSymbolData(symbol, interval, limit=1000, end_time=df['time'[0]])            df = df2.append(df, ignore_index = True)            repeat_rounds = repeat_rounds - 1        return dfData = Binance()m = Data.GetLongerSymbolData('BTCUSDT','1h')