Xpath using using random.randint(2,8) always identifies the first item using Python Selenium-CodePudding

Working on a random question picker from a codechef webpage but the problem is even when i am using random value of i, it always clicks the first question.

Code:

from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium import webdriver
from selenium.webdriver.support.ui import Select
import time
import random

PATH = "C:\Program Files (x86)\chromedriver.exe"
driver = webdriver.Chrome(PATH)

driver.get("https://www.codechef.com/practice?page=0&limit=20&sort_by=difficulty_rating&            sort_order=asc&search=&start_rating=0&end_rating=999&topic=&tags=&group=all")
driver.execute_script("window.scrollTo(0,document.body.scrollHeight)")
time.sleep(3)

# element = driver.find_element_by_link_text("Roller Coaster")

i = random.randint(2,8)

try:
    item = WebDriverWait(driver, 25).until(
    EC.presence_of_element_located((By.XPATH, "/html/body/div/div/div/div/div[3]/div/div[2]/div/div[3]/div/div/table/tbody/tr[' str(i) ']/td[2]/div/a"))
)
    item.click()

except:
    driver.quit()

CodePudding user response：

You need to make two simple tweaks as follows:

To click() on the clickable element instead of presence_of_element_located() you need to induce WebDriverWait for the element_to_be_clickable().
You need to replace the single quotes i.e. ' str(i) ' with double quotes " str(i) "

Your effective code block will be:

driver.get("https://www.codechef.com/practice?page=0&limit=20&sort_by=difficulty_rating&sort_order=asc&search=&start_rating=0&end_rating=999&topic=&tags=&group=all")
WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "button#gdpr-i-love-cookies"))).click()
i = random.randint(2,8)
print(i)
WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "/html/body/div/div/div/div/div[3]/div/div[2]/div/div[3]/div/div/table/tbody/tr[" str(i) "]/td[2]/div/a"))).click()

Console Output:
```
7
```

CodePudding user response：

Just change the Xpath to the following f-String and it will work perfectly:

Change this: "/html/body/div/div/div/div/div[3]/div/div[2]/div/div[3]/div/div/table/tbody/tr[' str(i) ']/td[2]/div/a"

To this: f"/html/body/div/div/div/div/div[3]/div/div[2]/div/div[3]/div/div/table/tbody/tr[{i}]/td[2]/div/a"