尝试通过虚拟机验证硒Python中页面的完整加载

问题描述

我正在尝试通过虚拟机运行一个简单的硒自动化脚本（仅加载google，搜索youtube并点击搜索按钮）。因此，当我按以下代码所示设置选项/参数时（甚至将无头模式设置为on），这就是我所拥有的： ＃代码开始

from pyvirtualdisplay import Display   
from selenium import webdriver  
from selenium.webdriver.firefox.firefox_binary import FirefoxBinary  
from selenium.webdriver.common.desired_capabilities import DesiredCapabilities.  
from selenium.webdriver.firefox.options import Options 
from selenium.webdriver.support.ui import WebDriverWait  
from selenium.webdriver.common.keys import Keys

display =Display(visible=0,size=(1024,768))  
display.start()  
options = Options()  
options.headless = False  
caps = DesiredCapabilities.FIREFOX  
caps['marionette'] = False  
binary = FirefoxBinary('/home/a-user/Al/firefox/firefox')  
browser = webdriver.Firefox(firefox_binary= binary,options = options,capabilities= caps,executable_path=r"/home/a-user/Al/firefox/geckodriver")  
browser.get('https://www.google.com')  
browser.find_element_by_name('q').send_keys("Youtube")
browser.find_element_by_xpath('//[@id="tsf"]/div[2]/div[1]/div[3]/center/input[1]').send_keys(Keys.ENTER)  
print("Headless Firefox Initialized")  
browser.close()  
display.stop()

＃代码结尾

但是当我尝试运行它时，它显示：
---错误消息的开始----

Traceback (most recent call last):   
 File "test.py",line 17,in <module>
   browser.find_element_by_name('q').send_keys("Youtube")  
 
File "/usr/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",line 496,in find_element_by_name
   return self.find_element(by=By.NAME,value=name)    
 File "/usr/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",line 978,in find_element
   'value': value})['value']    
 File "/usr/lib/python2.7/site-packages/selenium/webdriver/remote/webdriver.py",line 321,in execute
   self.error_handler.check_response(response)   
 File "/usr/lib/python2.7/site-packages/selenium/webdriver/remote/errorhandler.py",line 242,in check_response
   raise exception_class(message,screen,stacktrace)    
selenium.common.exceptions.NoSuchElementException: Message: Unable to locate element: {"method":"name","selector":"q"}
Stacktrace:      
at FirefoxDriver.prototype.findElementInternal_(file:///tmp/tmpG1qHlX/extensions/[e-mail]/components/driver-component.js:11885)  
at FirefoxDriver.prototype.findElement (file:///tmp/tmpG1qHlX/extensions/[e-mail]/components/driver-component.js:11894)      
at DelayedCommand.prototype.executeInternal_/k(file:///tmp/tmpG1qHlX/extensions/[e-mail]/components/command-processor.js:13395)   
at DelayedCommand.prototype.executeInternal_ (file:///tmp/tmpG1qHlX/extensions/[e-mail]/components/command-processor.js:13400)    
at DelayedCommand.prototype.execute/< (file:///tmp/tmpG1qHlX/extensions/[e-mail]/components/command-processor.js:13342)

我想知道是否有什么方法可以确保页面正确加载，然后继续与元素进行自动交互。感谢您的帮助！

解决方法

您收到此错误selenium.common.exceptions.NoSuchElementException: Message: Unable to locate element: {"method":"name","selector":"q"}，因为您的driver找不到带有name = 'q'的元素，可能是因为页面未完全加载。请参考以下代码，并相应地对代码进行更改。

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver import ActionChains
from selenium.webdriver.common.by import By
import time

driver = webdriver.Chrome()
wait = WebDriverWait(driver,5)
action = ActionChains(driver)

driver.get("https://www.google.com/")
G_Search = wait.until(EC.element_to_be_clickable((By.XPATH,"//input[@name='q']")))
action.move_to_element(G_Search).send_keys("Youtube").send_keys(Keys.ENTER).perform()