I have a few lines which are variations on follow:
for index in range(len(seclist)):
curr_price[index] = data.current(sid(seclist[index]),'price') Where seclist is a constant array of the id numbers of the securities I am looking at.
I am getting a build error "The sid(id) method takes one parameter."
What am I doing wrong?
You have to put a literal in sid (e.g. sid(24)); it won't take a variable (e.g. sid(n)) (a mystery why not, but it just ain't gonna take it).
Try something like this:
curr_price = {}
for stock in context.stocks:
curr_price[stock] = data.current(stock,'price') See https://www.quantopian.com/help#api-data-current for another way. You can pass a list of stocks to data.current and get back everything in one shot! No loopty loop. Not sure if it is any more efficient, though, if there's just a loop under the hood, and no actual vectorization.
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