使用Python+Selenium自动化时，为何正确代码仍出现Traceback报错？

问题代码 #

from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By

service_obj = Service("Downloads.exe")
driver = webdriver.Chrome(service =service_obj)
driver.get("https://rahulshettyacademy.com/client/auth/login")
driver.find_element(By.LINK_TEXT,"Forgot password?").click()

报错信息 #

Traceback (most recent call last):
  File "C:\Users\938861\PycharmProjects\pythonProject\Locatorsextension.py", line 8, in <module>
    driver.find_element(By.LINK_TEXT,"Forgot password?").click()
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\938861\PycharmProjects\pythonProject\venv\Lib\site-packages\selenium\webdriver\remote\webdriver.py", line 861, in find_element
    return self.execute(Command.FIND_ELEMENT, {"using": by, "value": value})["value"]
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\938861\PycharmProjects\pythonProject\venv\Lib\site-packages\selenium\webdriver\remote\webdriver.py", line 444, in execute
    self.error_handler.check_response(response)
  File "C:\Users\938861\PycharmProjects\pythonProject\venv\Lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 249, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"link text","selector":"Forgot password?"}
  (Session info: chrome=107.0.5304.107)
Stacktrace:
Backtrace:
    Ordinal0 [0x0064ACD3+2075859]
    Ordinal0 [0x005DEE61+1633889]
    Ordinal0 [0x004DB7BD+571325]
    Ordinal0 [0x0050AC2F+764975]
    Ordinal0 [0x0050AE1B+765467]
    Ordinal0 [0x0053D0F2+970994]
    Ordinal0 [0x00527364+881508]
    Ordinal0 [0x0053B56A+963946]
    Ordinal0 [0x00527136+880950]
    Ordinal0 [0x004FFEFD+720637]
    Ordinal0 [0x00500F3F+724799]
    GetHandleVerifier [0x008FEED2+2769538]
    GetHandleVerifier [0x008F0D95+2711877]
    GetHandleVerifier [0x006DA03A+521194]
    GetHandleVerifier [0x006D8DA0+516432]
    Ordinal0 [0x005E682C+1665068]
    Ordinal0 [0x005EB128+1683752]
    Ordinal0 [0x005EB215+1683989]
    Ordinal0 [0x005F6484+1729668]
    BaseThreadInitThunk [0x75C77D69+25]
    RtlInitializeExceptionChain [0x7710BB9B+107]
    RtlClearBits [0x7710BB1F+191]

Process finished with exit code 1

解决方案 #

1. 等待页面元素加载完成 #

页面未完全渲染就执行定位是常见原因，使用显式等待确保元素可交互：

from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

service_obj = Service("Downloads.exe")
driver = webdriver.Chrome(service=service_obj)
driver.get("https://rahulshettyacademy.com/client/auth/login")

# 最长等待10秒，直到元素可点击
wait = WebDriverWait(driver, 10)
forgot_pwd_link = wait.until(EC.element_to_be_clickable((By.LINK_TEXT, "Forgot password?")))
forgot_pwd_link.click()

2. 验证LINK_TEXT完全匹配 #

右键检查页面中的"Forgot password?"链接，确认<a>标签内的文本与代码中的字符串完全一致，包括空格、标点（如问号是否为半角）。

3. 检查元素是否在iframe内 #

如果链接嵌套在iframe中，需先切换到iframe再定位：

# 替换为实际iframe的定位方式（如ID、XPATH）
iframe = driver.find_element(By.ID, "target-iframe-id")
driver.switch_to.frame(iframe)

# 定位并点击链接
driver.find_element(By.LINK_TEXT,"Forgot password?").click()

# 操作完成后切回主文档
driver.switch_to.default_content()

4. 更换定位方式 #

若LINK_TEXT定位失败，可尝试其他更稳定的定位方式：

• PARTIAL_LINK_TEXT：匹配部分文本

  driver.find_element(By.PARTIAL_LINK_TEXT, "Forgot password").click()
  

• XPATH：精准匹配文本

  driver.find_element(By.XPATH, "//a[text()='Forgot password?']").click()
  

• CSS选择器：通过链接属性定位

  driver.find_element(By.CSS_SELECTOR, "a[href*='forgot-password']").click()
  

内容的提问来源于stack exchange，提问作者Natasha Chouhan