That doesn’t seem right.
@connorcreate What specific endpoint and/or method are you using? In general, if there are no trades then a 200 valid response is returned but there is just no JSON data. Here is an example trying to fetch trades on a Saturday (when there are no trades). The response is simply an empty set and no error.
I am using the new alpaca-py library so it actually may just be an issue with that ( I am sorry for not clarifying that). If I call this during a valid trading day it works fine but on days or times when no trades happen I get this exception thrown.
request = StockTradesRequest(symbol_or_symbols='AAPL', start=datetime(2011, 1, 1, 14, 0, 0), end=datetime(2011, 1, 1, 14, 1, 0))
stock_client.get_stock_trades(request)
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
Cell In[32], line 2
1 request = StockTradesRequest(symbol_or_symbols='AAPL', start=datetime(2011, 1, 1, 14, 0, 0), end=datetime(2011, 1, 1, 14, 1, 0))
----> 2 stock_client.get_stock_trades(request)
3 # trade_client.get_calendar(GetCalendarRequest(start=datetime(2010, 1, 4, 14, 0, 0), end=datetime(2010, 1, 4, 14, 1, 0)))
File ~\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\alpaca\data\historical\stock.py:151, in StockHistoricalDataClient.get_stock_trades(self, request_params)
148 if self._use_raw_data:
149 return raw_trades
--> 151 return TradeSet(raw_trades)
File ~\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\alpaca\data\models\trades.py:69, in TradeSet.__init__(self, raw_data)
66 parsed_trades = {}
68 for symbol, trades in raw_data.items():
---> 69 parsed_trades[symbol] = [Trade(symbol, trade) for trade in trades]
71 super().__init__(data=parsed_trades)
File ~\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\alpaca\data\models\trades.py:69, in (.0)
66 parsed_trades = {}
68 for symbol, trades in raw_data.items():
---> 69 parsed_trades[symbol] = [Trade(symbol, trade) for trade in trades]
71 super().__init__(data=parsed_trades)
File ~\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.10_qbz5n2kfra8p0\LocalCache\local-packages\Python310\site-packages\alpaca\data\models\trades.py:44, in Trade.__init__(self, symbol, raw_data)
...
45 if key in TRADE_MAPPING
46 }
48 super().__init__(symbol=symbol, **mapped_trade)
AttributeError: 'NoneType' object has no attribute 'items'```@connorcreate I think what the SDK is complaining about is your symbol_or_symbols. It wants it to be a list. Like this
request = StockTradesRequest(symbol_or_symbols=['AAPL'],
start=datetime.datetime(2018, 1, 1, 14, 0, 0),
end=datetime.datetime(2018, 1, 1, 14, 1, 0),
)
data_client.get_stock_trades(request)
Try that.
The python typing says it does allow strings and when I pass in strings on valid timeframes it returns data. Here is an image showing both of those things 
