方法(一)
# 获得重定向url
from urllib import request
# https://zhidao.baidu.com/question/681501874175782812.html
url = "https://www.baidu.com/link?url=IscBx0u8h9q4Uq3ihTs_PqnoNWe7slVWAd2dowQKrnqJedvthb3zrh9JqcMJu3ZqFrbW_DKVuTnTypDbMkZx_hwCQIGFPRVWGyxRXA-65jK&wd=&eqid=f7aeecba00092ed7000000065ec62596"
print(request.urlopen(url).geturl()