I want to get the market data in python using websocket, but getting error "Please provide a valid symbol". can i get some examples on what valid symbols for index, equity, futures, options etc.,

Also, why is the documentation is so chaotic, with out head and tail.

is it too much to ask for a sample program ?
the python file officially supplied is half baked and does not work.

it took me 2 days to figure out token generation, god knows how long it will take to get the streaming and order logic working.