python - selenium.common.exceptions.WebDriverException : Message: 'chromedriver' executable needs to be in PATH error with Headless Chrome

Question

当我运行脚本时，出现此错误

Traceback (most recent call last):
  File "C:\Users\ishaq\AppData\Local\Programs\Python\Python36\lib\site-packages\selenium\webdriver\common\service.py", line 74, in start
    stdout=self.log_file, stderr=self.log_file)
  File "C:\Users\ishaq\AppData\Local\Programs\Python\Python36\lib\subprocess.py", line 707, in __init__
    restore_signals, start_new_session)
  File "C:\Users\ishaq\AppData\Local\Programs\Python\Python36\lib\subprocess.py", line 992, in _execute_child
    startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:/Users/ishaq/AppData/Local/Programs/Python/Python36/headless.py", line 9, in <module>
    driver = webdriver.Chrome(executable_path=os.path.abspath("chromedriver"),   chrome_options=chrome_options)
  File "C:\Users\ishaq\AppData\Local\Programs\Python\Python36\lib\site-packages\selenium\webdriver\chrome\webdriver.py", line 62, in __init__
    self.service.start()
  File "C:\Users\ishaq\AppData\Local\Programs\Python\Python36\lib\site-packages\selenium\webdriver\common\service.py", line 81, in start
    os.path.basename(self.path), self.start_error_message)
selenium.common.exceptions.WebDriverException: Message: 'chromedriver' executable needs to be in PATH. Please see https://sites.google.com/a/chromium.org/chromedriver/home

这是我的剧本

import os  
from selenium import webdriver  
from selenium.webdriver.common.keys import Keys  
from selenium.webdriver.chrome.options import Options 

chrome_options = Options()  
chrome_options.add_argument("--headless")  
chrome_options.binary_location = 
r'C:\Users\ishaq\Desktop\chrome\chromedriver.exe'    
driver = webdriver.Chrome(executable_path=os.path.abspath("chromedriver"),   
chrome_options=chrome_options)  
driver.get("http://www.duo.com") 

magnifying_glass = driver.find_element_by_id("js-open-icon")  
if magnifying_glass.is_displayed():  
  magnifying_glass.click()  
else:  
  menu_button = driver.find_element_by_css_selector(".menu-trigger.local")  
  menu_button.click() 

search_field = driver.find_element_by_id("site-search")  
search_field.clear()  
search_field.send_keys("Olabode")  
search_field.send_keys(Keys.RETURN)  
assert "Looking Back at Android Security in 2016" in driver.page_source
driver.close()

Answer 1

如果我们分析日志，似乎主要问题在于 start os.path.basename(self.path) 和随后的错误消息 selenium.common.exceptions.WebDriverException: Message: 'chromedriver' executable needs to be in PATH 。

因此，从错误中很明显，Python客户端无法找到 chromedriver 二进制文件。

您必须在这里注意以下几点:

chrome_options.binary_location :此参数配置 chrome.exe 而不是 chromedriver.exe

os.path.abspath("chromedriver")将选择的文件路径chromedriver ，但不会在末尾附加 chromedriver.exe 。

这是我的Windows 8系统上的示例代码，用于在中启动 Chrome :Headless Mode :

from selenium import webdriver  
from selenium.webdriver.chrome.options import Options 

chrome_options = Options()  
chrome_options.add_argument("--headless")  
driver = webdriver.Chrome(chrome_options=chrome_options, executable_path=r'C:\Utility\BrowserDrivers\chromedriver.exe')  
driver.get("http://www.duo.com") 
print("Chrome Browser Initialized in Headless Mode")
driver.quit()
print("Driver Exited")