Unable to send WhatsApp message using chrome driver Python Error: NoSuchElementException

Question

这是我第一次 post 来这里！我正在使用 Selenium 的 Chrome 驱动程序将 WhatsApp 附件发送给某些人。这是我的代码：

from selenium import webdriver
import os
from time import sleep

link="https://wa.me/91xxxxxxxxxx"
phnno="91xxxxxxxxxx"

driver=webdriver.Chrome(executable_path=f"{os.getcwd()}\chromedriver.exe")
#driver.get(link)
#button=driver.find_element_by_xpath('//a[@title="Share on WhatsApp"]')
#button.click()

driver.get(f"https://web.whatsapp.com/send?phone={phnno}&text&app_absent=0") 
#This above line opens up the sender window in whatsapp

attachbutt=driver.find_element_by_xpath('//span[@data-icon="clip"]') #This is line 15
#The above line is the one that is giving me the error
attachbutt.click()

sleep(10)

forpdf=driver.find_element_by_xpath('//input[@accept="*"]')

path="C:\Users\Deven\Desktop\test_file.pdf"

forpdf.send_keys(path) #Attaches the file
sleep(5)

sendbutt=driver.find_element_by_xpath('//span[@data-icon="send"]')
sendbutt.click()

错误：

DevTools listening on ws://127.0.0.1:56230/devtools/browser/1a8a2adb-37ee-4b0c-bedc-5cfb58559c24
Traceback (most recent call last):
  File "d:\Coding\Python Scripts\Dr Nikhil Prescription App\Prescription Generator\WA-testing.py", line 15, in <module>
    attachbutt=driver.find_element_by_xpath('//span[@data-icon="clip"]')
  File "C:\Users\Deven\AppData\Local\Programs\Python\Python39\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 394, in find_element_by_xpath
    return self.find_element(by=By.XPATH, value=xpath)
  File "C:\Users\Deven\AppData\Local\Programs\Python\Python39\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 976, in find_element
    return self.execute(Command.FIND_ELEMENT, {
  File "C:\Users\Deven\AppData\Local\Programs\Python\Python39\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "C:\Users\Deven\AppData\Local\Programs\Python\Python39\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"xpath","selector":"//span[@data-icon="clip"]"}
  (Session info: chrome=90.0.4430.212)

PS D:\Coding\Python Scripts\Dr Nikhil Prescription App\Prescription Generator> [16176:15752:0523/212201.236:ERROR:device_event_log_impl.cc(214)] [21:22:01.236] USB: usb_device_handle_win.cc:1054 Failed to read descriptor from node connection: A device attached to the system is not functioning. (0x1F)

它说它无法定位元素，但我在检查网站然后编写代码时非常仔细。我仍然想知道为什么它不起作用。谁能帮我解决我做错了什么？谢谢！

Answer 1

看起来您在单击该元素之前缺少等待/延迟。
最简单的解决方案是把

sleep(5)

之前

attachbutt=driver.find_element_by_xpath('//span[@data-icon="clip"]')

但是，最好在那里使用预期条件。像这样：

from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

attachbutt = WebDriverWait(driver, 20).until(
EC.element_to_be_clickable((By.XPATH, '//span[@data-icon="clip"]')))

Unable to send WhatsApp message using chrome driver Python Error: NoSuchElementException

Unable to send WhatsApp message using chrome driver Python Error: NoSuchElementException

python

selenium

google-chrome

python-3.x

selenium-webdriver