Selenium Python get_element by ID failing

Question

有人能帮我理解为什么我的代码无法通过ID找到元素吗？下面的代码：

from selenium import webdriver
driver=webdriver.Firefox()
driver.get('https://app.waitwhile.com/checkin/lltest3/user')
element = driver.find_element_by_id("guestPhone")

检查元件清楚地显示ID。

<input type="tel" name="guestPhone" id="guestPhone" class="form-control ng-pristine ng-empty ng-invalid ng-invalid-phone-validator ng-invalid-required ng-touched" ng-model="form.model" ng-model-options="{ 'updateOn': 'default blur', 'debounce': { 'default': 350, 'blur': 0 } }" uib-typeahead="guest.phone for guest in form.onChange({value:$viewValue})" typeahead-min-length="6" typeahead-on-select="form.onSelect({guest:$item})" typeahead-select-on-exact="true" uib-tooltip="Please enter valid number. Include country code for non-US numbers" tooltip-trigger="'none'" tooltip-is-open="(form.guestForm.$submitted || form.guestForm.guestPhone.$touched) &amp;&amp; form.guestForm.guestPhone.$invalid" tooltip-placement="bottom" ng-required="::form.required" phone-validator="US" placeholder="Mobile phone" title="Please enter a valid phone number" autocomplete="nope" next-on-enter="" aria-autocomplete="list" aria-expanded="false" aria-owns="typeahead-47-2884" required="required" style="">

第页。S.我也试过XPath和name。仍然没有运气。

Answer 1

您需要等待元素在页面上可见。您可以判断这是动态加载的，因为如果您右键单击chrome中的页面并查看源代码，您将看到没有guestPhone元素。它用javascript 加载

下面是一个来自http://isaacviel.name/make-web-driver-wait-element-become-visiable/:

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
driver = webdriver.Firefox()
driver.get("http://somedomain/url_that_delays_loading")
try:
element = WebDriverWait(driver, 10).until(
EC.visibility_of_element_located((By.ID, "myDynamicElement"))
)
finally:
driver.quit()

Answer 2

您可以尝试使用web驱动程序wait：

代码：

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 
driver = webdriver.Chrome(executable_path = r'D:/Automation/chromedriver.exe')
driver.maximize_window()
driver.get("https://app.waitwhile.com/checkin/lltest3/user")
wait = WebDriverWait(driver, 10)  
element = wait.until(EC.element_to_be_clickable((By.ID, 'guestPhone')))
element.send_keys('006867987')