Selenium的代码由python

Question

Selenium的代码由python

from selenium import webdriver
from selenium.webdriver.support.select import Select
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
import time
from selenium.webdriver.common.action_chains import ActionChains


driver = webdriver.Chrome()
driver.maximize_window()
driver.get("https://motul.lubricantadvisor.com/Default.aspx?data=1&amp;lang=ENG&lang=eng")

def getallcars():
    wait = WebDriverWait(driver, 10)
    wait.until(EC.presence_of_element_located((By.ID, "ctl00_ContentPlaceHolder1_rptCategoryBtn_ctl01_btnImage")))

    driver.find_element(By.ID, "ctl00_ContentPlaceHolder1_rptCategoryBtn_ctl01_btnImage").click()

    wait.until(EC.presence_of_element_located((By.ID, "ctl00_ContentPlaceHolder1_lblSelectedMake")))
    driver.find_element(By.ID, 'ctl00_ContentPlaceHolder1_lblSelectedMake').click()

    wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, "#ctl00_ContentPlaceHolder1_lstMake")))

    el = driver.find_element(By.NAME,"ctl00$ContentPlaceHolder1$lstMake")
    car =[]
    for option in el.find_elements(By.TAG_NAME,'option'):
        car.append((option.text).encode('utf8'))
    return car

cars=getallcars()


for value in cars:
    drop = driver.find_element(By.CSS_SELECTOR, '#ctl00_ContentPlaceHolder1_lstMake')
    sel = Select(drop)
    sel.select_by_visible_text(value)
    time.sleep(2) #<---- THIS POINT!!
    driver.find_element(By.ID,'ctl00_ContentPlaceHolder1_HeaderModel').click()
    el2 = driver.find_element(By.NAME, "ctl00$ContentPlaceHolder1$lstModel")
    print "The models for %s are:"  %value
    for option in el2.find_elements(By.TAG_NAME,'option'):
        print  option.text
    action = ActionChains(driver)
    action.move_to_element_with_offset(el2, 300, 200)
    action.click()
    action.perform()
    driver.find_element(By.CSS_SELECTOR,'#ctl00_ContentPlaceHolder1_HeaderMake').click()

我一直在做爬虫。我完全不明白。所以我有一个问题。也许这是代码的34行。我是关于＃的标志它是"time.sleep(2)"方法的用法。因为当它改变“sel.select_by_visible_text(value)”

时，它没有检测到选择框

我该怎么做？我不想使用“time.sleep(2)”方法。我已经试过“expected_conditions.presence_of_element_located”它不起作用。我猜这是关于Dropbox的问题。这个尺寸基本上不是因为当我尝试了另一个尺寸的“expected_conditions.presence_of_element_located”

时它做得很好

Answer 1

显式等待不起作用，因为您可以使用的条件是“可点击的元素”，“要显示的元素”等。您用于显式等待的元素是可用的，也可以单击，但它失败，因为其他元素与它重叠。

由于其他元素的重叠需要时间消失，我们必须等待重叠消失才能点击元素。显式等待可以等待元素出现和可点击，它已经存在但是被其他元素隐藏了。

在这种情况下，我们必须使用time.sleep（）来进行艰难的等待

selexbox目前在硒检查错误

Selenium的代码由python

1 个答案: