Added basic logging capability to trading.py and related classes.

event/event.py

@@ -10,15 +10,33 @@ class TickEvent(Event):
         self.bid = bid
         self.ask = ask
 
+    def __str__(self):
+        return "Type: %s, Instrument: %s, Time: %s, Bid: %s, Ask: %s" % (
+            str(self.type), str(self.instrument), 
+            str(self.time), str(self.bid), str(self.ask)
+        )
+
+    def __repr__(self):
+        return str(self)
+
 
 class SignalEvent(Event):
     def __init__(self, instrument, order_type, side, time):
         self.type = 'SIGNAL'
         self.instrument = instrument
         self.order_type = order_type
-        self.side = side        
+        self.side = side
         self.time = time  # Time of the last tick that generated the signal
 
+    def __str__(self):
+        return "Type: %s, Instrument: %s, Order Type: %s, Side: %s" % (
+            str(self.type), str(self.instrument), 
+            str(self.order_type), str(self.side)
+        )
+
+    def __repr__(self):
+        return str(self)
+
 
 class OrderEvent(Event):
     def __init__(self, instrument, units, order_type, side):
@@ -26,4 +44,13 @@ class OrderEvent(Event):
         self.instrument = instrument
         self.units = units
         self.order_type = order_type
-        self.side = side        
+        self.side = side
+
+    def __str__(self):
+        return "Type: %s, Instrument: %s, Units: %s, Order Type: %s, Side: %s" % (
+            str(self.type), str(self.instrument), str(self.units),
+            str(self.order_type), str(self.side)
+        )
+
+    def __repr__(self):
+        return str(self)