I’m using the Alpaca Data API V2. I imported this example from the github repo: alpaca-trade-api-python/websocket_example.py at master · alpacahq/alpaca-trade-api-python · GitHub
I’m fairly new to python development. When I hard-code multiple ticker symbols to
stream.subscribe_trades(print_trade, 'AAPL', 'IBM', 'ASML', 'TSLA')
the logger returns:
subscribed to trades: ['IBM', 'ASML', 'TSLA', 'AAPL'], quotes:  and bars: 
However, if I attempt to apply a LIST or a TUPLE as a variable (stock_tuple in this case) to that function, it fails:
I’ve simplified the creation of the tuple by defining it this way:
stock_tuple = ('AAPL', 'IBM', 'ASML', 'TSLA')
That variable is then passed to the stream.subscribe_trades function, and it fails.
stock_tuple = ('AAPL', 'IBM', 'ASML', 'TSLA') print(stock_tuple) stream = Stream(settings.alpaca_api_key, settings.alpaca_secret, base_url=URL(settings.alpaca_base_url), data_feed=settings.alpaca_feed, raw_data=True) stream.subscribe_trades(print_trade, stock_tuple)
This fails with the message:
error: invalid syntax (400)
How might I dynamically send the list of stocks I want to watch to this function?