硒python无法获取第一个元素

Question

I need to choose (open) every movie in the list, starting by first one to last, once in one, go back and open the next movie in the list until last movie. But i got a problem because the code selects the last movie and opens it not the first.

I don't know how to select the first one and repeat the process to every movie in the list.

This is the code:

from selenium import webdriver
import time

URL = 'https://www.cineplanet.cl/peliculas'
XPATH_VER_MAS_PELICULAS = '//button'
ClASS_CARTELERA = 'movie-info-details'
XPATH_COMPRAR = '//div[@class="movie-info-details"]/div[@class="movie-info-details--wrapper"]/div[@class="movie-info-details--first-button-wrapper"]/button'
PATH = 'C:\\Program Files\\chrome-driver\\chromedriver.exe'

driver = webdriver.Chrome(PATH)
driver.get(URL)

def available_movies():
    try:
        select = driver.find_element_by_class_name(ClASS_CARTELERA)
        allOptions = select.find_elements_by_xpath(XPATH_COMPRAR)
        for option in allOptions:
            option.click()
    except:
        pass

print (driver.title)
time.sleep(5)

while True:
    try:
        if XPATH_VER_MAS_PELICULAS:
            driver.find_elements_by_xpath(XPATH_VER_MAS_PELICULAS)[-1].click()
            time.sleep(5)
        else:
            break
    except:
        break

available_movies()
time.sleep(2)
driver.quit()

Answer 1

Your code needs a lot of refactoring, but lets give it a try:

# Keep doing this while we have movies to click
    while len(driver.find_element_by_class_name('movies-list--large-item')):
        # This will iterate through each movie
        for movie in driver.find_element_by_class_name('movies-list--large-item'):
            # Now get the button to see the movie details
            movie.find_element_by_class_name('cineplanet-icon_more').click()
            # Once you are in the movie details view do an assertion
            # Go back in the browser to the previous page
            driver.back()

        # If you reach this it means that you clicked all the movies in the current view
        # So click the View more movies button to go to the next page
        driver.find_element_by_css_selector('.movies-list--view-more-button-wrapper .call-to-action--text')

A couple of extra things that I noticed in your code: - Do not use time.sleep(5) is unreliable. Use Webdriver waits and expected conditions to wait for elements to be present:

http://selenium-python.readthedocs.io/waits.html

• Do not use Xpaths, its also unreliable. Use ID's if possible or class names
• Surface your exceptions, you are doing: except: pass that way you wont know when your code fails
• Organize your code in a Test Suite approach, maybe consider using Unittest2 for python

Hope it helps!