问题
I am having trouble with a selenium error related to a FireFox binary.
I added C:/Users/Mack/AppData/Local/Programs/Python/ to PATH using backslashes and rebooted. I downloaded what I thought is the correct file here https://github.com/mozilla/geckodriver/releases I put the file in the directory connected to PATH.
To remedy this: I tried using two backslashes
binary = FirefoxBinary("C:\\Users\Mack\AppData\Local\Programs\Python\Python38-32\geckodriver-v0.27.0-win64\geckodriver.exe")
which throws the same error
I tried using one backslash
binary = FirefoxBinary("C:\Users\Mack\AppData\Local\Programs\Python\Python38-32\geckodriver-v0.27.0-win64\geckodriver.exe")
which throws:
SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \UXXXXXXXX escape
Traceback (most recent call last):
File "C:\Users\Mack\Desktop\hacker-stories\Trends.py", line 32, in <module>
browser = webdriver.Firefox(**firefox_binary=binary**)
File "C:\Users\Mack\AppData\Local\Programs\Python\Python38-32\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 170, in __init__
RemoteWebDriver.__init__(
File "C:\Users\Mack\AppData\Local\Programs\Python\Python38-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 157, in __init__
self.start_session(capabilities, browser_profile)
File "C:\Users\Mack\AppData\Local\Programs\Python\Python38-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 252, in start_session
response = self.execute(Command.NEW_SESSION, parameters)
File "C:\Users\Mack\AppData\Local\Programs\Python\Python38-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
self.error_handler.check_response(response)
File "C:\Users\Mack\AppData\Local\Programs\Python\Python38-32\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.InvalidArgumentException: Message: binary is not a Firefox executable
Code Test.py
from selenium import webdriver
from selenium.webdriver.firefox.options import Options
from selenium.webdriver.firefox.firefox_binary import FirefoxBinary
binary = FirefoxBinary("C:/Users/Mack/AppData/Local/Programs/Python/Python38-32/geckodriver-v0.27.0-win64/geckodriver.exe")
print(binary)
browser = webdriver.Firefox(firefox_binary=binary)
options = Options()
options.set_preference("browser.download.folderList",2)
options.set_preference("browser.download.manager.showWhenStarting", False)
options.set_preference("browser.download.dir","/Data")
options.set_preference("browser.helperApps.neverAsk.saveToDisk", "application/octet-stream,application/vnd.ms-excel")
driver = webdriver.Firefox(firefox_options=options)
Any help understanding this error is much appreciated.
回答1:
Change the binary to whatever firefox.exe you get and your executable path to your geckodriver.
options = Options()
binary = r'C:\Program Files\Mozilla Firefox\firefox.exe'
options.set_preference("browser.download.folderList",2)
options.set_preference("browser.download.manager.showWhenStarting", False)
options.set_preference("browser.download.dir","/Data")
options.set_preference("browser.helperApps.neverAsk.saveToDisk", "application/octet-stream,application/vnd.ms-excel")
options.binary = binary
driver = webdriver.Firefox(r'C:/Users/Mack/AppData/Local/Programs/Python/Python38-32/geckodriver-v0.27.0-win64/geckodriver.exe',options=options)
回答2:
This error message...
selenium.common.exceptions.InvalidArgumentException: Message: binary is not a Firefox executable
...implies that the binary file which you have passed as an argument to FirefoxBinary() isn't a valid firefox executable.
You seem to have passed the absolute path of the geckodriver.exe as an argument to FirefoxBinary() which is causing the error.
Solution
Instead of the geckodriver.exe you need to pass the absolute path of the firefox.exe. Moreover, firefox_options is deprecated now and you have to use options and you can use the following solution:
from selenium import webdriver
from selenium.webdriver.firefox.options import Options
from selenium.webdriver.firefox.firefox_binary import FirefoxBinary
options = Options()
options.binary = FirefoxBinary(r'C:\Program Files\Mozilla Firefox\firefox.exe')
options.set_preference("browser.download.folderList",2)
options.set_preference("browser.download.manager.showWhenStarting", False)
options.set_preference("browser.download.dir","/Data")
options.set_preference("browser.helperApps.neverAsk.saveToDisk", "application/octet-stream,application/vnd.ms-excel")
driver = webdriver.Firefox(executable_path=r'C:/Users/Mack/AppData/Local/Programs/Python/Python38-32/geckodriver-v0.27.0-win64/geckodriver.exe', options=options)
回答3:
Your path to the exe looks incorrect.
"/" (slash) is something used often in unix like systems to represent directory structures.
Window uses a backslash.
Change the string to use two backslashes instead of a forward slash.
回答4:
It seems that when using Firefox Portable, the FirefoxPortable.exe file is not recognized, instead, when creating binary path, point to firefox.exe file found under "FirefoxPortable\App\firefox64" (in my case). The above is valid if your Gecko driver works - so the first few lines of output (before the exception) look something like this:
[RemoteTestNG] detected TestNG version 7.3.0
1611580278948 geckodriver INFO Listening on 127.0.0.1:18391
This issue appeared for me after the problem described here: Cannot find firefox binary in PATH. Make sure firefox is installed thus, they are not the same issue - as presented in some stack comments.
good luck!
来源：https://stackoverflow.com/questions/64034859/invalidargumentexception-message-binary-is-not-a-firefox-executable-error-usin