[🐛 Bug]: [py] Chromedriver can't run when downloaded at default cache location in cygwin + python

[rivokl]

Description

I wanted to run a webdriver against a website and benefit from the automatic download of Selenium Manager on the way. If I use the recommended way to get a driver (namely calling webdriver.Chrome()), I get an error (see below).

I could solve it by copying chromedriver.exe from its default location to the current directory but still I'd rather use the recommended way.

Reproducible Code

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

from selenium import __version__ as selenium_version
from selenium import webdriver
from selenium.webdriver.chrome.service import Service

print(selenium_version)

## Not working
driver = webdriver.Chrome()

## Working with Chrome
# service = Service("./chromedriver.exe")
# driver = webdriver.Chrome(service=service)


## Open DuckDuckGo
driver.get("https://www.duckduckgo.com")

Debugging Logs

Traceback (most recent call last):
  File "/cygdrive/e/test/src/./install_chrome.py", line 14, in <module>
    driver = webdriver.Chrome()
             ^^^^^^^^^^^^^^^^^^
  File "/cygdrive/e/test/src/.venv/lib/python3.12/site-packages/selenium/webdriver/chrome/webdriver.py", line 45, in __init__
    super().__init__(
  File "/cygdrive/e/test/src/.venv/lib/python3.12/site-packages/selenium/webdriver/chromium/webdriver.py", line 55, in __init__
    self.service.start()
  File "/cygdrive/e/test/src/.venv/lib/python3.12/site-packages/selenium/webdriver/common/service.py", line 106, in start
    self._start_process(self._path)
  File "/cygdrive/e/test/src/.venv/lib/python3.12/site-packages/selenium/webdriver/common/service.py", line 221, in _start_process
    self.process = subprocess.Popen(
                   ^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/subprocess.py", line 1026, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/usr/lib/python3.12/subprocess.py", line 1955, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: 'C:\\Users\\me\\.cache\\selenium\\chromedriver\\win64\\146.0.7680.165\\chromedriver.exe'

[selenium-ci]

@rivokl, thank you for creating this issue. We will troubleshoot it as soon as we can.

Selenium Triage Team: remember to follow the Triage Guide

[cgoldberg]

It works fine for me under Cygwin. Please show debug logs.

[selenium-ci]

We need more information about this issue in order to troubleshoot.

Please turn on logging and re-run your code. Information on how to adjust logs for your language can be found in our
Troubleshooting documentation.

[rivokl]

Logging level set at DEBUG

Seems all right, is chromedrive supposed to be in PATH? I guess not. Tell me if you need more context.

Selenium Manager binary found at: /cygdrive/e/test/src/.venv/lib/python3.12/site-packages/selenium/webdriver/common/windows/selenium-manager.exe
Executing process: /cygdrive/e/test/src/.venv/lib/python3.12/site-packages/selenium/webdriver/common/windows/selenium-manager.exe --browser chrome --debug --language-binding python --output json
chromedriver not found in PATH
chrome detected at C:\Program Files\Google\Chrome\Application\chrome.exe
Detected browser: chrome 146.0.7680.178
Required driver: chromedriver 146.0.7680.165
chromedriver 146.0.7680.165 already in the cache
Driver path: C:\Users\me\.cache\selenium\chromedriver\win64\146.0.7680.165\chromedriver.exe
Browser path: C:\Program Files\Google\Chrome\Application\chrome.exe

Edit: changed the log report from quote-style to code-style

[cgoldberg]

is chromedriver supposed to be in PATH?

No. If it is found in PATH, it will use that instead of downloading it.

Show the full log including the stack trace when the error occurs. The snippet you posted looks fine.

[rivokl]

is chromedriver supposed to be in PATH?

No. If it is found in PATH, it will use that instead of downloading it.

Show the full log including the stack trace when the error occurs. The snippet you posted looks fine.

Please tell me how I can get a full log because that's all I got from enabling logging at DEBUG level.

Edit: Maybe the issue is the Windows-style path of the chromedriver.exe binary that is passed to subprocess.Popen()?