How to parse the value from webpage to python?

Question

I want to extract the value from the given xpath:

'//*[@id="octable"]/tbody/tr[34]/td[8]/b 

to Python.

import requests
from lxml import html

pageContent=requests.get('https://nseindia.com/live_market/dynaContent/live_watch/option_chain/optionKeys.jsp?symbolCode=209&symbol=INFY&symbol=INFY&instrument=-&date=-&segmentLink=17&symbolCount=2&segmentLink=17')

tree = html.fromstring(pageContent.content)

g=tree.xpath('//*[@id="octable"]/tbody/tr[34]/td[8]/b/text()')

print(g)

Expected result: 7,962,000

Actual result: []

Answer 1

使用g=tree.xpath('//*[@id="octable"]/tr/td[8]/b/text()')代替g=tree.xpath('//*[@id="octable"]/tbody/tr[34]/td[8]/b/text()')产生预期的结果。