Calling ArcGIS Pro class library from Python

call_pro_class_library.py

'''call ArcGIS Pro class library to get the ObjectID field name of a given shapefile'''
import clr
import sys
import pythoncom
pythoncom.CoInitialize()

path = r'C:\Projects\SimplePro\SimplePro\bin\x64\Debug'
sys.path.append(path)
clr.AddReference('SimplePro')
from SimplePro import DataManagement
c = DataManagement()
res = c.GetObjectIDField(r"C:\GIS\Temp\arcgisprodata", "Shopping")
print res

ProClassLibrary.cs

using System;
using ArcGIS.Core.Hosting;
using ArcGIS.Core.Data;

namespace SimplePro
{
    public class DataManagement
    {
        public static string GetObjectIDField(string path, string shapefile)
        {

            //Call Host.Initialize before constructing any objects from ArcGIS.Core
            try
            {
                Host.Initialize();
                Console.WriteLine("ArcGIS License initialized");
                System.IO.DirectoryInfo folder = new System.IO.DirectoryInfo(path);
                Shapefile shp = new Shapefile(folder);
                TableDefinition easementsDefinition = shp.GetDefinition(shapefile);
                return easementsDefinition.GetObjectIDField();
                
            }
            catch (Exception e)
            {
                // Error (missing installation, no license, 64 bit mismatch, etc.)
                Console.WriteLine(string.Format(e.Message));
                return "error";
            }
        }
    }
}