python上requests_html的HTMLSession

1. 建立Session：

from requests_html import HTMLSession
session = HTMLSession()
 

2. 打开Url检查返回码

mainPage = session.get("https://www.cnblogs.com/chengguo/")
if (mainPage.status_code == 404):
        print("url open failed: {}".format(mainPage.url))
        sys.exit()     

3. 查找内容并检查返回内容

articleElement = mainPage.html.find("#mainBox > main > div.article-list", first=True)
if (articleElement == None):
        print("article empty");

4. 获取Element内容中的信息(文本/链接)

print(articleElement.text)
for url in articleElement.links:
 

5. 保存网页元素text

      file = open("output.text", "w", encoding="utf-8")
      file.write(articleElement.text)
      file.close()

6. 保存网页内容bin

        file = open("output.html", "wb")
        file.write(mainPage.html.raw_html)
        file.close()

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