Working on adjusted the DataPortal class (unstable)

catalyst/exchange/exchange_algorithm.py

@@ -96,11 +96,15 @@ class ExchangeTradingAlgorithmBase(TradingAlgorithm):
             if self._symbol_lookup_date is not None \
             else self.sim_params.end_session
 
-        exchange = self.exchanges[exchange_name]
+        if exchange_name is None:
+            exchange = self.exchanges.values()[0]
+        else:
+            exchange = self.exchanges[exchange_name]
+
         return self.asset_finder.lookup_symbol(
-            symbol_str,
-            as_of_date=_lookup_date,
-            exchange=exchange
+            symbol=symbol_str,
+            exchange=exchange,
+            as_of_date=_lookup_date
         )
 
 

catalyst/utils/run_algo.py

@@ -38,7 +38,7 @@ from catalyst.utils.factory import create_simulation_parameters
 import catalyst.utils.paths as pth
 
 from catalyst.exchange.algorithm_exchange import ExchangeTradingAlgorithm
-from catalyst.exchange.data_portal_exchange import DataPortalExchange
+from catalyst.exchange.data_portal_exchange import DataPortalExchangeLive
 from catalyst.exchange.bitfinex.bitfinex import Bitfinex
 from catalyst.exchange.asset_finder_exchange import AssetFinderExchange
 from catalyst.exchange.exchange_portfolio import ExchangePortfolio
@@ -209,7 +209,7 @@ def _run(handle_data,
         )
         env.asset_finder = AssetFinderExchange()
 
-        data = DataPortalExchange(
+        data = DataPortalExchangeLive(
             exchanges=exchanges,
             asset_finder=env.asset_finder,
             trading_calendar=open_calendar,