Dreambooker

Predicaments

We’re asked to learn a library about safety.

However, if the duration is greater than 5 minutes (~300 seconds), we need to click agree to let the timing continue. So, when we finish the learning progress, we’ll click 6*60/5 = 72 times ……..

Solution (Script)

import time
import selenium
from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.support import expected_conditions as EC

# Please edit:
username = 'your_username'
password = 'your_password'

def get_driver(username,password):
    # Using Chrome to access web
    driver = webdriver.Chrome()
    # Open the website
    driver.get('http://examsafety.nuist.edu.cn/')

    # Select the id box
    id_box = driver.find_element_by_name('xuehao')
    # Send id information
    id_box.send_keys(username)
    # Find password box
    pass_box = driver.find_element_by_name('password')
    # Send password
    pass_box.send_keys(password)

    # Find login button
    login_button = driver.find_element_by_name('提交')
    login_button.click()

    # Find and click on list of courses
    title = '安全知识学习'
    button = driver.find_element_by_css_selector("[title^='"+title+"']")
    button.click()

    # Find the exam we need
    title = '大气物理学院实验室安全考试通用题库'
    button = driver.find_element_by_link_text(title)
    button.click()

    return driver

def accept_alert(driver):
    try:
        # Wait for 300 seconds ...
        WebDriverWait(driver, 60*5).until(EC.alert_is_present())
        # Switch to the alert and accept
        alert = driver.switch_to.alert
        alert.accept()
        print("alert accepted")
    except TimeoutException:
        print("no alert, wait for 5 seconds")

        # Just in case the alert is slow ...
        try:
            WebDriverWait(driver, 5).until(EC.alert_is_present())
            alert = driver.switch_to.alert
            alert.accept()
            print("Finally, alert is accepted!")
        except TimeoutException:
            print("no alert")

def main():
    driver = get_driver(username,password)

    # If lefttime is greater than 300, let python click the pop-up for you.
    k = 0
    while True:
        accept_alert(driver)
        k += 1
        if k == 72:
            break

    driver.close()

if __name__ == '__main__':
    main()

Now, we can let it go!

References

1. Controlling the Web with Python
2. Selenium WebDriver Python, search WebElement
3. Locating Hyperlinks by Link Text
4. Handling A Confirmation Alert
5. Check if any alert exists using selenium with python