Quantopian's community platform is shutting down. Please read this post for more information and download your code.
Back to Community
BUG: GM_WSC nans on 14th Dec 2015

Run this super quick code starting on Dec 14th 2015. The algorithm will buy 1 share of GM_WSC, and midday the associated position reports a cost_basis of nan.
This in turn seems to make the entire portfolio fill with nan's. -- After the portfolio goes nan it doesn't come back, so its a blocking bug for any algorithm that tries to own GM_WSC on Dec 14th 2015.

def initialize(context):  
    schedule_function(buy, date_rules.every_day(), time_rules.market_open())  
    schedule_function(debugging, date_rules.every_day(), time_rules.market_close())

def buy(context, data):  
    order(sid(45232), 1)

def debugging(context, data):  
    a=0 #place to put a breakpoint  

Is this something the Quantopian admins can fix behind the scenes? - Or is there a common workaround for this?