Extract python/other programming code from html (converted from Jupyter notebook)

[birdywen]

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// script "财联社.cs"
/*/
nuget -\HtmlAgilityPack;
/*/
using System;
using System.Xml;
using HtmlAgilityPack;
///                    
public class Program
{
    public static void Main()
    {
        
        #region example
            
        var path = @"C:\Users\birdy\Desktop\CIS 512- Car Price Prediction-0719.html";
        
        var doc = new HtmlDocument();
        doc.Load(path);
        
        var node = doc.DocumentNode.SelectNodes("/html/body/div/div[1]/div[2]/div[2]/div/div/pre");
        foreach (var t in node) {
            
            print.it(t.InnerText);
        }
        
        #endregion
    }
}    
    

How to replace them with  ' ', " ", >, < Thank you so much!