Hi Ted,

Try importing it from zipline.api

Check out this code snippet:

"""
This cell is going to create the basic framework of the algorithm  
"""

import zipline  
import pytz  
from datetime import datetime  
import matplotlib.pyplot as pyplot  
from collections import defaultdict

from zipline import TradingAlgorithm  
from zipline.api import order_target_percent, record, symbol, history, add_history, schedule_function, date_rules, time_rules  
import numpy as np

#: NOTICE HOW THIS IS OUTSIDE INITIALIZE, BECAUSE IT IS, WE CAN REDFINE IT EVERYTIME WE REDINE INITIALIZE  
aapl_weights = .50  
spy_weights = .50

def initialize(context):  
    context.aapl = 24  
    context.spy = 8554  
    context.aapl_weights = aapl_weights  
    context.spy_weights = spy_weights  
    context.first_time = True  
    schedule_function(func=order_stocks,  
                      date_rule=date_rules.every_day(),  
                      time_rule=time_rules.market_open(minutes=30))  
def order_stocks(context, data):  
    order_target_percent(context.aapl, 1)

def handle_data(context, data):  
    #: Only order on the first bar  
    return  
    if context.first_time:  
        order_target_percent(context.aapl, context.aapl_weights)  
        order_target_percent(context.spy, context.spy_weights)  
        context.first_time = False  

Thanks
Seong

Perfect! Thanks Seong. Thanks also for posting the tutorials. They were very helpful!

Hi Seong, Karen,

You might want to just import it automatically, and generally, anything else that works in the browser backtester that would also work when backtesting using the research platform. Or is the idea that you want users to explicitly import this stuff, so that they know what's going on, and don't create problems / conflicts in their notebooks?

Grant