Python Selenium 一个元素与不同的 xpath 使用 Try-Loop

Question

there are some elements with different xpath like 'code' in the website:

.td[1]/div[4]/div
.td[1]/div[3]/div
null

if the xpath =.td[1]/div[4]/div, then there should be another ISIN code in.td[1]/div[3]/div I want to access them all with:

driver.get('https://www.chinabondconnect.com/en/Primary/Primary-Information/Onshore.html')
wait = WebDriverWait(driver, 30)
driver.find_element_by_link_text('Others').click()

try: 
    codes=[code.get_attribute('textContent') for code in driver.find_elements_by_xpath("//table[@id='tb7']//tr[starts-with(@class,'tb2tr pg')]//td[1]/div[4]/div")]
    ISINs=[ISIN.get_attribute('textContent') for ISIN in driver.find_elements_by_xpath("//table[@id='tb7']//tr[starts-with(@class,'tb2tr pg')]//td[1]/div[3]/div")]
except:
    try:
      codes=[code.get_attribute('textContent') for code in driver.find_elements_by_xpath("//table[@id='tb7']//tr[starts-with(@class,'tb2tr pg')]//td[1]/div[3]/div")]                 
    except:
      codes = 'null'
#dateframe=...               

But it will not return all issuers in the website, only just few ones, not sure why this happened, any help will be appreciated!

Answer 1

So far I have something like this. Which inserts null for no child elements of that td.

driver.get('https://www.chinabondconnect.com/en/Primary/Primary-Information/Onshore.html')
driver.find_element_by_link_text('Others').click()
codes=[]
ISINs=[]
rows=driver.find_elements_by_xpath("//table[@id='tb7']//tr[starts-with(@class,'tb2tr pg')]")
for row in rows:
    try: 
        codes.append(row.find_element_by_xpath("./td[1]/div[4]/div").get_attribute('textContent'))
    except:
        codes.append('null')
    try: 
        ISINs.append(row.find_element_by_xpath("./td[1]/div[3]/div").get_attribute('textContent'))
    except:
        ISINs.append('null')
        
dataframe=pd.DataFrame({'codes':codes,'ISINs':ISINs}) 
print (dataframe)

Import

import pandas as pd