python 斗鱼弹幕的爬取一（selenium）

针对弹幕的爬取我们如果只需要获取看到的网页里面的而数据，使用selenium就能实现，对于直播平台来说，往往有第三方平台api让你获取数据（可以获取发弹幕，发弹幕者的名字礼物等等，这需要客户端向弹幕服务器发送登录请求，心跳信息的发送等等）今天只获取弹幕信息储存到txt文件中，上代码，上图片

#!/usr/bin/env python3
# _*_ coding: utf-8 _*_
# auther hou
import time
import random
from selenium import webdriver
chrome_options = webdriver.ChromeOptions()

# 使用headless无界面浏览器模式
chrome_options.add_argument('--headless')

# 设置配置文件不加载图片增加爬虫效率
prefs = {"profile.managed_default_content_settings.images": 2}
chrome_options.add_experimental_option("prefs", prefs)
browser = webdriver.Chrome(chrome_options=chrome_options)

class DoYu_DanMu():

    def __init__(self) -> None:
        self.url = 'https://www.douyu.com/' # 初始化斗鱼路径为下面拼接url

    def GetIdUrl(self,Id):
        Id_Href = self.url+str(Id)
        browser.get(Id_Href)  # 浏览器请求到直播房间中
        while True:
            time.sleep(random.random()*3)
            try:
                ls = browser.find_elements_by_xpath('.//div[@class=" danmu-6e95c1"]/div/div')
                for danmu in ls :
                    if len(danmu.text) > 0:
                        try:
                            print(danmu.text)
                        except:
                            pass
                        self.save(danmu.text)
                    else:
                        continue
            except:
                pass
            # except:
            #     time.sleep(random.random()*6)
            #     ls = browser.find_elements_by_xpath('.//div[@class=" danmu-6e95c1"]/div/div')
            #
            #     for danmu in ls:
            #         if len(danmu.text) > 0:
            #             try:
            #                 print(danmu.text)
            #             except:
            #                 pass
            #             self.save(danmu.text)
            #         else:
            #             continue
    def save(self,danmus):
        with open('hcf.txt','a+',encoding='utf-8')as f:
            f.write(danmus+'\n')

if __name__ == '__main__':
    num = input('请输入要爬取弹幕的房间号')  # 22619
    DoYu = DoYu_DanMu()
    DoYu.GetIdUrl(num)