SymbolTickEventArgs

 using cAlgo.API;
 namespace cAlgo
 {
     // This example shows how to use the SymbolTickEventArgs
     [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
     public class SymbolTickEventArgsSample : Indicator
     {
         protected override void Initialize()
         {
             Symbol.Tick += OnSymbolTick;
         }
         private void OnSymbolTick(SymbolTickEventArgs obj)
         {
             Print("Symbol: {0} | Ask: {1} | Bid: {2}", obj.SymbolName, obj.Ask, obj.Bid);
         }
         public override void Calculate(int index)
         {
         }
     }
 }

 import clr
 clr.AddReference("cAlgo.API")
 from cAlgo.API import *
 class Test():    
     def initialize(self):
         api.Symbol.Tick += self.on_symbol_tick
     def on_symbol_tick(self, args):
         print(f"Symbol: {args.SymbolName} | Ask: {args.Ask} | Bid: {args.Bid}")