Проблема, когда отключение проверило итераторы в vs2008 SP1 (_HAS_ITERATOR_DEBUGGING=0)

Попробуйте использовать библиотеку lxml. Ответ получен путем размещения запроса на URL с использованием запросов.

import requests
import lxml
from lxml import html

contact_list = []
def scrape(url, pages):

  for page in range(1, pages):
    headers = {
      "Content-Type": "application/x-www-form-urlencoded; charset=UTF-8",
      "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.109 Safari/537.36",
      "X-Requested-With": "XMLHttpRequest",
      "Cookie": "PHPSESSID=2q0tk3fi1kid0gbdfboh94ed56",
    }

    data = {
      "page": f"{page}"
    }

    r = requests.post(url, headers=headers, data=data)
    tree = html.fromstring(r.content)

    links= tree.xpath('//a[@class="link_orange"]')
    for link in links:
      # print(link.get('href'))
      contact_list.append(link.get('href'))


url = "http://www.indiabusinessguide.in/ajax_advertiselist.php"

scrape(url, 10)
print(contact_list)
print(len(contact_list))