any local working example?

[stanleywu111]

Can I just run the local simulator without all the hassle of database and trading connector configuration? Any example? Thanks!

[alexcwyu]

I don't have that yet.

but you can quickly modify the code either in:

1. algotrader/app/backtest_runner.py
   change to mongo feed to yahoo feed

or

2. poc/backtest_in_memory.py
   you can construct your pandas datafeed:
   feed = PandasMemoryDataFeed(dict_df, ref_data_mgr=mgr)

method 1 should be easier to you....

[stanleywu111]

After running backtest_runner.py, I got the following error:

Traceback (most recent call last):
  File "E:/Project/python-trading/algotrader/app/backtest_runner.py", line 77, in <module>
    main()
  File "E:/Project/python-trading/algotrader/app/backtest_runner.py", line 73, in main
    BacktestRunner(True).start(app_context)
  File "E:\Project\python-trading\algotrader\__init__.py", line 22, in start
    self._start(app_context=app_context, **kwargs)
  File "E:\Project\python-trading\algotrader\app\__init__.py", line 10, in _start
    self.run()
  File "E:/Project/python-trading/algotrader/app/backtest_runner.py", line 38, in run
    self.app_context.start()
  File "E:\Project\python-trading\algotrader\__init__.py", line 22, in start
    self._start(app_context=app_context, **kwargs)
  File "E:\Project\python-trading\algotrader\trading\context.py", line 54, in _start
    startable.start(self)
  File "E:\Project\python-trading\algotrader\__init__.py", line 22, in start
    self._start(app_context=app_context, **kwargs)
  File "E:\Project\python-trading\algotrader\strategy\down_2pct_strategy.py", line 23, in _start
    super(Down2PctStrategy, self)._start(app_context, **kwargs)
  File "E:\Project\python-trading\algotrader\strategy\strategy.py", line 92, in _start
    self.app_config.from_date, self.app_config.to_date)
  File "E:\Project\python-trading\algotrader\provider\subscription.py", line 136, in subscript_market_data
    feed.subscribe_mktdata(self.get_subscription_keys(feed.id(), instruments, subscription_types, from_date, to_date))
  File "E:\Project\python-trading\algotrader\provider\subscription.py", line 146, in get_subscription_keys
    keys.append(HistDataSubscriptionKey(inst_id=instrument.inst_id,
AttributeError: 'NoneType' object has no attribute 'inst_id'