Classwork 8

WebDriverWait() and expected_conditions in Python selenium

Author

Byeong-Hak Choe

Published

March 23, 2026

Modified

March 4, 2026


Setup

Below is to set up the web scrapping environment with Python selenium:

import pandas as pd
import numpy as np
import os, time, random
from io import StringIO

# Import the necessary modules from the Selenium library
from selenium import webdriver  # Main module to control the browser
from selenium.webdriver.common.by import By  # Helps locate elements on the webpage
from selenium.webdriver.chrome.options import Options  # Allows setting browser options
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.common.exceptions import NoSuchElementException
from selenium.common.exceptions import TimeoutException
from selenium.common.exceptions import StaleElementReferenceException

# Set the working directory path
wd_path = 'ABSOLUTE_PATHNAME_OF_YOUR_WORKING_DIRECTORY' # e.g., '/Users/bchoe/Documents/DANL-210'
os.chdir(wd_path)  # Change the current working directory to wd_path
os.getcwd()  # Retrieve and return the current working directory

# Create an instance of Chrome options
options = Options()

# Initialize the Chrome WebDriver with the specified options
driver = webdriver.Chrome(options=options)


Goal

  • Use selenium to get to https://qavbox.github.io/demo/delay/.
    1. Use selenium to click the button with β€œClick me!”
    2. Use selenium to locate the text element that will be displayed after 5 seconds using WebDriverWait with EC.presence_of_element_located.
    • Its XPath is '//*[@id="two"]'

Answer:



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