some things work

econ/exchange.py

@@ -7,6 +7,10 @@ class Exchange():
     
     def __init__(self) -> None:
         
+        self.reset()
+        pass
+
+    def reset(self):
         self.account={}
         self.escrow={}
         self.lme=LightMatchingEngine()
@@ -21,8 +25,7 @@ class Exchange():
         self.demand={}
         self.total_supply={}
         self.supply={}
-        pass
-
+    
     def add_to_account(self,account_id,resource,amount):
         """
         Adds resources to account escrow
@@ -237,4 +240,13 @@ class Exchange():
         if account_id in self.account:
             if resource in self.account[account_id]:
                 return self.account[account_id][resource]
+        return 0
+    
+    def get_total_demand(self,resource):
+        if resource in self.total_demand:
+            return self.total_demand[resource]
+        return 0
+    def get_total_supply(self,resource):
+        if resource in self.total_supply:
+            return self.total_supply[resource]
         return 0