各种语言效率比较，c++和python最快，java最后一名

这里要读一个xml文件，并把数据写入csv。

python代码

python 3.8

def read_xml3():
    doc = etree.parse("D:/tmp/bbc_text/bbc-text.xml")
    root=doc.getroot()
    news_items =[]
    with open("D:/tmp/bbc_text/bbc_text_python.csv", "w", encoding="utf-8") as f:
        f.write("category,text\n")
        for news_item_xml in root.getchildren():
            f.write(news_item_xml.attrib['category'])
            f.write(",")
            f.write(news_item_xml.text.replace('"','""'))
            f.write("\n")
        f.flush()
        f.close()

C#代码

    public class BbcNewsItem
    {
   
   
        public string Category {
   
    get; set; }
        public string Text {
   
    get; set; }
    }

    public static