zipline backtest issues

[Jian Li]

Hello:

 

I use zipline example for my backtest, there is always a warning related to benchmark, also I noticed it took about 1 minute to get some result.  how to get ride to those warning and improve performance?

 

Thanks

 

Jim

 

 

warning message:

 ***********************************************************************************************************

 

[2015-06-24 20:01:56.925000] WARNING: Loader: No benchmark data found for date range.

start_date=2015-06-24 00:00:00+00:00, end_date=2015-06-24 20:01:39.026000, url=http://ichart.finance.yahoo.com/table.csv?a=5&c=2015&b=24&e=24&d=5&g=d&f=2015&s=%5EGSPC

 

 

 

 

 

code:

*****************************************

from zipline.api import order, record, symbol

 

def initialize(context):
    pass

 

def handle_data(context, data):
    order(symbol('AAPL'), 10)
    record(AAPL=data[symbol('AAPL')].price)
********************************************