使用 python 中的 BeautifulSoup 从 HTML 刮取数字

Question

Here is the code:

import urllib.request
import re
from bs4 import BeautifulSoup


html = urllib.request.urlopen('http://py4e-data.dr-chuck.net/comments_1385959.html').read()
soup = BeautifulSoup(html, "html.parser")

sum=0
# Retrieve all of the anchor tags
tags = soup('<tr>')
for tag in tags:
    # Look at the parts of a tag
    y=str(tag)
    x= re.findall("[0-9]+",y)
    for i in x:
        i=int(i)
        sum=sum+i
print(sum)

why it counts wrongly? The number in the results is not what it should be.

Answer 1

You should replace soup('<tr>') by soup('tr')