Why isn't the 'chromedriver' executable in the PATH even after using ChromeDriverManager through Selenium and Python

问题

I'm trying to click the "Launch Earth" button with this block of code.

from selenium import webdriver
from webdriver_manager.chrome import ChromeDriverManager

driver = webdriver.Chrome(ChromeDriverManager().install())
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import Web
from selenium.webdriver.support import expected_conditions as EC
url = 'https://www.google.com/earth/'
driver = webdriver.chrome()
driver.get(url)
wait = WebDriverWait(driver, 10)
launchEarthButton = wait.until(EC.element_to_be_clickable((By.XPATH, '/html/body/header/div/nav[1]/ul[2]/li[2]/a/span/span' ))
launchEarthButton.click()

However, I get the error message below. What is wrong? For reference, I am using a MacOs computer. I had the issue of wrong path come up previously but I solved it with ChromeDriverManager.

FileNotFoundError                         Traceback (most recent call last)
/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/selenium/webdriver/common/service.py in start(self)
     71             cmd.extend(self.command_line_args())
---> 72             self.process = subprocess.Popen(cmd, env=self.env,
     73                                             close_fds=platform.system() != 'Windows',

/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/subprocess.py in __init__(self, args, bufsize, executable, stdin, stdout, stderr, preexec_fn, close_fds, shell, cwd, env, universal_newlines, startupinfo, creationflags, restore_signals, start_new_session, pass_fds, encoding, errors, text)
    853 
--> 854             self._execute_child(args, executable, preexec_fn, close_fds,
    855                                 pass_fds, cwd, env,

/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/subprocess.py in _execute_child(self, args, executable, preexec_fn, close_fds, pass_fds, cwd, env, startupinfo, creationflags, shell, p2cread, p2cwrite, c2pread, c2pwrite, errread, errwrite, restore_signals, start_new_session)
   1701                         err_msg = os.strerror(errno_num)
-> 1702                     raise child_exception_type(errno_num, err_msg, err_filename)
   1703                 raise child_exception_type(err_msg)

FileNotFoundError: [Errno 2] No such file or directory: 'chromedriver'

During handling of the above exception, another exception occurred:

WebDriverException                        Traceback (most recent call last)
<ipython-input-9-940dd1aefbaf> in <module>
      7 from selenium.webdriver.support import expected_conditions as EC
      8 url = 'https://www.google.com/earth/'
----> 9 driver = webdriver.Chrome()
     10 driver.get(url)
     11 wait = WebDriverWait(driver, 10)

/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/selenium/webdriver/chrome/webdriver.py in __init__(self, executable_path, port, options, service_args, desired_capabilities, service_log_path, chrome_options, keep_alive)
     71             service_args=service_args,
     72             log_path=service_log_path)
---> 73         self.service.start()
     74 
     75         try:

/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/selenium/webdriver/common/service.py in start(self)
     79         except OSError as err:
     80             if err.errno == errno.ENOENT:
---> 81                 raise WebDriverException(
     82                     "'%s' executable needs to be in PATH. %s" % (
     83                         os.path.basename(self.path), self.start_error_message)

WebDriverException: Message: 'chromedriver' executable needs to be in PATH. Please see https://sites.google.com/a/chromium.org/chromedriver/home

回答1:

You were close. As you have used:

driver = webdriver.Chrome(ChromeDriverManager().install())

The cached / downloaded ChromeDriver will be used to initiate a new google-chrome Browsing Context.

So you need to remove the second instance of driver = webdriver.Chrome()

来源：https://stackoverflow.com/questions/62741852/why-isnt-the-chromedriver-executable-in-the-path-even-after-using-chromedrive