早晨操作find_element_by_css_selector定位輸入框的程式碼如下：

#開啟搜狗搜尋頁面
driver.get('https://www.sogou.com/')
driver.find_element_by_css_selector('#sec-input').send_keys(Keys.CONTROL,'v')
sleep(2)

driver.quit()

執行時報：

C:\Users\EDZ\Desktop\selenium_demo\venv\Scripts\python.exe C:/Users/EDZ/Desktop/selenium_demo/webdriver/Keys_Option.py
Traceback (most recent call last):
  File 
 
"C:/Users/EDZ/Desktop/selenium_demo/webdriver/Keys_Option.py", line 33, in <module>
    driver.find_element_by_css_selector('#sec-input').send_keys(Keys.CONTROL,'v')
  File "C:\Users\EDZ\Desktop\selenium_demo\venv\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 627, in find_element_by_css_selector
    
 
return self.find_element(by=By.CSS_SELECTOR, value=css_selector)
  File "C:\Users\EDZ\Desktop\selenium_demo\venv\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 1014, in find_element
    'value': value})['value']
  File "C:\Users\EDZ\Desktop\selenium_demo\venv\lib\site-packages\selenium\webdriver\remote\webdriver.py
 
", line 318, in execute
    self.error_handler.check_response(response)
  File "C:\Users\EDZ\Desktop\selenium_demo\venv\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 240, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"css selector","selector":"#sec-input"}
  (Session info: chrome=83.0.4103.116)
Stacktrace:
Backtrace:
    Ordinal0 [0x003E9563+2725219]
    Ordinal0 [0x002E8551+1672529]

搜狗輸入的原始碼如下：

經檢查是find_element_by_css_selector後面定位輸入框class的格式有誤

正確程式碼如下：

#開啟搜狗搜尋頁面
driver.get('https://www.sogou.com/')
driver.find_element_by_css_selector('.sec-input').send_keys(Keys.CONTROL,'v')
sleep(2)

執行操作正常沒有報錯

C:\Users\EDZ\Desktop\selenium_demo\venv\Scripts\python.exe C:/Users/EDZ/Desktop/selenium_demo/webdriver/Keys_Option.py

Process finished with exit code 0

具體find_element_by_css_selector幾種操作方法可以參考前幾天的部落格

地址如下：

https://www.cnblogs.com/gengwulovestudy/p/13373151.html

以上有問題隨時討論！