Python selenium WebDriver: error with list index exceeding bounds

Question

Python selenium WebDriver: error with list index exceeding bounds

I am encountering an issue with the code below while trying to scroll down a website using JavaScript enabled. The problem arises when the newHeight value reaches approximately 229275, at this point I receive an "list out of range" error on line

browser.find_elements_by_class_name('alt')[0].click()

. What is causing this error and how can I go about resolving it?

Here is my current code snippet:

browser = webdriver.PhantomJS("phantomjs")
    browser.get(url)
        while True:            
         time.sleep(pause)
         newHeight = browser.execute_script("return document.body.scrollHeight")
         print newHeight
         browser.find_elements_by_class_name('alt')[0].click()

python selenium selenium-webdriver

Answer 1

Answer №1

Try this method to scroll down the page and click on a specific element:

from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait as wait
from selenium.webdriver.support import expected_conditions as EC
from selenium.common.exceptions import NoSuchElementException

browser = webdriver.PhantomJS("phantomjs")
browser.get(url)
while True:
    browser.find_element_by_tag_name("body").send_keys(Keys.END)
    try:
        wait(browser, 10).until(EC.element_to_be_clickable((By.CLASS_NAME, "alt"))).click()
    except NoSuchElementException:
        break

With this approach, you should be able to locate and click on the required element on the page, or exit the loop if it is not found.

Answer 2

Try this method to scroll down the page and click on a specific element:

from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait as wait
from selenium.webdriver.support import expected_conditions as EC
from selenium.common.exceptions import NoSuchElementException

browser = webdriver.PhantomJS("phantomjs")
browser.get(url)
while True:
    browser.find_element_by_tag_name("body").send_keys(Keys.END)
    try:
        wait(browser, 10).until(EC.element_to_be_clickable((By.CLASS_NAME, "alt"))).click()
    except NoSuchElementException:
        break

With this approach, you should be able to locate and click on the required element on the page, or exit the loop if it is not found.

Answer 3

Answer №2

Using a simple try/except statement


browser = webdriver.PhantomJS("phantomjs")
browser.get(url)

while True:   
    try:
        time.sleep(pause)
        newHeight = browser.execute_script("return document.body.scrollHeight")
        print(newHeight)
        browser.find_elements_by_class_name('alt')[0].click()
    except Exception as e:
        pass

Answer 4

Using a simple try/except statement


browser = webdriver.PhantomJS("phantomjs")
browser.get(url)

while True:   
    try:
        time.sleep(pause)
        newHeight = browser.execute_script("return document.body.scrollHeight")
        print(newHeight)
        browser.find_elements_by_class_name('alt')[0].click()
    except Exception as e:
        pass

Answer 5

Answer №3

It's always wise to double-check the list before taking any action.

browser = webdriver.PhantomJS("phantomjs")
browser.get(url)
while True:            
    time.sleep(pause)
    newHeight = browser.execute_script("return document.body.scrollHeight")
    print newHeight
    alt_elements = browser.find_elements_by_class_name('alt')
    if len(alt_elements):
        alt_elements[0].click()

By the way, keep in mind that an endless while loop can be risky.

Answer 6

It's always wise to double-check the list before taking any action.

browser = webdriver.PhantomJS("phantomjs")
browser.get(url)
while True:            
    time.sleep(pause)
    newHeight = browser.execute_script("return document.body.scrollHeight")
    print newHeight
    alt_elements = browser.find_elements_by_class_name('alt')
    if len(alt_elements):
        alt_elements[0].click()

By the way, keep in mind that an endless while loop can be risky.

Python selenium WebDriver: error with list index exceeding bounds

Answer №1

Answer №2

Answer №3

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