ChartContainers

 using cAlgo.API;
 namespace cAlgo.Plugins;
 [Plugin(AccessRights = AccessRights.None)]
 public class Test : Plugin
 {
     protected override void OnStart()
     {
         Print($"Current chart containers #: {ChartManager.ChartContainers.Count}");
         Print($"Main Chart Container is: {ChartManager.ChartContainers.MainChartContainer}, number of frames: {ChartManager.ChartContainers.MainChartContainer.Count}");
         foreach (var chartContainer in ChartManager.ChartContainers)
         {
             Print($"Chart container Id: {chartContainer.Id}, Frames #: {chartContainer.Count}, Is Main: {chartContainer == ChartManager.ChartContainers.MainChartContainer}");
         }
     }
 }

 import clr
 clr.AddReference("cAlgo.API")
 from cAlgo.API import *
 class Test():
     def on_start(self):
         print(f"Current chart containers #: {api.ChartManager.ChartContainers.Count}")
         print(f"Main Chart Container is: {api.ChartManager.ChartContainers.MainChartContainer}, number of frames: {api.ChartManager.ChartContainers.MainChartContainer.Count}")
         for chartContainer in api.ChartManager.ChartContainers:
             print(f"Chart container Id: {chartContainer.Id}, Frames #: {chartContainer.Count}, Is Main: {chartContainer == api.ChartManager.ChartContainers.MainChartContainer}")