你会使用python爬虫抓取弹幕吗

#【何同学】我用108天开了个灯......视频的cid：499893135
#弹幕所在地
url = "http://comment.bilibili.com/499893135.xml"
#发送请求
req = requests.get(url = url)
#获取内容响应的内容
html_byte = req.content
#将byte转为str
html_str = str(html_byte,"utf-8")

#假装自己是浏览器
header ={
    'User-Agent':'Mozilla/5.0 (windows NT 10.0; Win64; x64) AppleWEBKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.80 Safari/537.36 Edg/98.0.1108.43'
}
#【何同学】我用108天开了个灯......视频的cid：499893135
#弹幕所在地
url = "http://comment.bilibili.com/499893135.xml"
#发送请求
req = requests.get(url = url, headers=header)
#获取内容响应的内容
html_byte = req.content
#将byte转为str
html_str = str(html_byte,"utf-8")

#解析
    soup = BeautifulSoup(html,'html.parser')
    #找到html文件里的<d>标签
    results = soup.find_all('d')
    #把标签里的文本提取出来
    contents = [x.text for x in results]
    #存为字典
    dic ={"contents" : contents}

#用字典创建了一个电子表格
df = pd.DataFrame(dic)
df["contents"].to_excel('htx.xlsx')

import requests
from bs4 import BeautifulSoup
import pandas as pd
 def main():
    html = askUrl()
    dic =analyse(html)
    writeExcel(dic)
 def askUrl():
    #假装自己是浏览器
    header ={
        'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.80 Safari/537.36 Edg/98.0.1108.43'
    }
    #【何同学】我用108天开了个灯......视频的cid：499893135
    #弹幕所在地
    url = "http://comment.bilibili.com/499893135.xml"
    req = requests.get(url = url, headers=header)
    html_byte = req.content#字节
    html_str = str(html_byte,"utf-8")
    return html_str
 def analyse(html):
    soup = BeautifulSoup(html,'html.parser')
    results = soup.find_all('d')
    #x.text表示要放到contents中的值
    contents = [x.text for x in results]
    #保存结果
    dic ={"contents" : contents}
    return dic
 def writeExcel(dic):
    #用字典创建了一个电子表格
    df = pd.DataFrame(dic)
    df["contents"].to_excel('htx.xlsx')
 if __name__ == '__main__':
    main()