美丽的汤无法提取表

Question

我有以下代码：

import os 
import re
from bs4 import BeautifulSoup
import urllib.request
#from urllib.request import request, urlopen
#from urllib import request
import pandas as pd
import numpy as np
import datetime
import time
import openpyxl


for a in range(0,len(symbols),1):
    #ua = UserAgent()
    url = "https://iborrowdesk.com/report/" + symbols[a]
    """
       test urls:
                 https://iborrowdesk.com/report/wmt
    """

    print("Extracting Values for " + symbols[a] + ".")

    try:
        page = urllib.request.urlopen(url)
        soup = BeautifulSoup(page, "html.parser", from_encoding="iso-8859-1")

        value_label_value = soup.find_all('table', {'class': 'table table-condensed table-hover'})

1. 当我键入print(value_label_value)时，不会返回任何内容
2. 我做错了什么