reticulate::repl_python()
## Estimating the number of components in Bayesian settings
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
import time
import numpy
lnk = 'https://www.coursera.org/learn/mixture-models/exam/9IYM3/estimating-the-number-of-components-in-bayesian-settings'
lnk2 = 'https://www.coursera.org/learn/mixture-models/exam/9IYM3/estimating-the-number-of-components-in-bayesian-settings/attempt'
# Download the `geckodriver` webdriver.
driver = webdriver.Firefox(executable_path=r'/home/englianhu/Documents/geckodriver')
driver.get(lnk2)
#assert 'Python' in driver.title
wait = WebDriverWait(driver, 5)
elem = driver.find_element_by_xpath('//*[@id="email"]')
elem.send_keys('englianhu@gmail.com')
wait = WebDriverWait(driver, 1)
elem = driver.find_element_by_xpath('//*[@id="password"]')
elem.send_keys('**********')
#elem.clear()
elem.send_keys(Keys.RETURN)
wait = WebDriverWait(driver, 5)
elem = driver.find_element_by_xpath('/html/body/div[6]/div/div[3]/div[1]/button')
elem.send_keys(Keys.RETURN)
for n in list(numpy.arange(0, 10000, 0.5)):
## assessment question
elem = driver.find_element_by_xpath(
'//*[@id="text-input-ZTDYZx9hEeqF4xJzBvIAyQ-input"]')
elem.send_keys(str(n))
elem = driver.find_element_by_xpath(
'//*[@id="text-input-UlGqjR-lEeqKlBLH7WtknQ-input"]')
elem.send_keys(str(n))
elem = driver.find_element_by_xpath(
'//*[@id="text-input-WhtVnCApEeqqhA61a6gg2w-input"]')
elem.send_keys(str(n))
elem = driver.find_element_by_xpath(
'//*[@id="text-input-giU7KiAoEeqFkg4D2xLqww-input"]')
elem.send_keys(str(n))
wait = WebDriverWait(driver, 1)
elem = driver.find_element_by_xpath(
'/html/body/div[6]/div/div/div/div[2]/div[2]/div/div[2]/div/div[3]/div/div[1]/div[1]/div/div[1]/label/input')
elem.click()
wait = WebDriverWait(driver, 1)
elem = driver.find_element_by_xpath(
'/html/body/div[6]/div/div/div/div[2]/div[2]/div/div[2]/div/div[3]/div/div[2]/button[2]/span')
elem.click()
#window_after = driver.window_handles[0]
#driver.switch_to.window(window_after)
#elem = driver.switchTo().frame(driver.find_element_by_xpath('/html/body/div[6]/div/div/div/div[2]/div[2]/div/div[2]/div/div[3]/div/div[1]/div[1]/div/div[1]/label/input')
#get current window handle
p1 = driver.current_window_handle
driver.switch_to.window(p1)
#wait = WebDriverWait(driver, 5)
#driver.switch_to_active_element()
#driver.switch_to.window(driver.window_handles[-1])
#wait = WebDriverWait(driver, 5)
#driver.implicitly_wait(10)
#driver.findelement(by.linktext('test').click();
#elem = wait.until(ExpectedConditions.elementToBeClickable(By.XPATH('/html/body/div[6]/div/div/div/div[2]/div[2]/div/div[1]/div/div/div/div[2]/div[1]/div/button/span')))
#elem = wait.until(EC.presence_of_element_located(By.XPATH, '/html/body/div[6]/div/div/div/div[2]/div[2]/div/div[1]/div/div/div/div[2]/div[1]/div/button/span'))
elem = driver.find_element_by_xpath(
'/html/body/div[6]/div/div/div/div[2]/div[2]/div/div[1]/div/div/div/div[2]/div[1]/div/button/span')
elem.click()
#wait = WebDriverWait(driver, 5)
#driver.implicitly_wait(2)
#driver.refresh()
#driver.get(lnk)
time.sleep(8)
#driver.refresh()
### wait = WebDriverWait(driver, 1)
#p2 = driver.current_window_handle
#driver.switch_to.window(p2)
#driver.refresh()
#driver.get('https://www.coursera.org/learn/mixture-models/exam/9IYM3/estimating-the-number-of-components-in-bayesian-settings')
#wait = WebDriverWait(driver, 5)
#elem = wait.until(EC.presence_of_element_located(
# By.XPATH, '/html/body/div[3]/div/div/div[2]/div/div[2]/div[2]/div[2]/main/div/div[3]/div[3]/div/div/div/button/span'))
#wait = WebDriverWait(driver, 10)
#time.sleep(10)
driver.switch_to.active_element()
elem = driver.find_element_by_xpath(
'/html/body/div[3]/div/div/div[2]/div/div[2]/div[2]/div[2]/main/div/div[3]/div[3]/div/div/div/button/span')
elem.click()
#driver.implicitly_wait(10)
#p = driver.current_window_handle
#driver.switch_to.window(p)
#while True:
# try:
#driver.execute_script("arguments[0].click();")
# elem = driver.find_element_by_xpath(
# '/html/body/div[3]/div/div/div[2]/div/div[2]/div[2]/div[2]/main/div/div[3]/div[3]/div/div/div/button/span')
# elem.click()
# break
# except:
# time.sleep(1)
# driver.refresh()
#assert 'No results found.' not in driver.page_source
#driver.close()
在for loop时才会出现无止境读取的空白页面，尝试driver.get()、driver.refresh()、wait.until()都无效，因为网址一样，而内容不一样，driver.switch_to.active_element(...)和driver.switch_to.frame()怎么使用？
#driver.switch_to.active_element()
elem = driver.find_element_by_xpath(
'/html/body/div[3]/div/div/div[2]/div/div[2]/div[2]/div[2]/main/div/div[3]/div[3]/div/div/div/button/span')
elem.click()
