Chromedriver crashes with "unrecognized capability: chromeOptions" - python-2.7

Question

I have been using a simple Python2.7 script using Selenium with Chromedriver to open a browser and download some files. Lately, I got an error saying that Chromedriver is outdated (Chrome version must be between 70 and 73) while my Chrome was ver. 75. So I downloaded ChromeDriver 75.0.3770.90 which should be OK for my Chrome version, but I got another error saying "selenium.common.exceptions.WebDriverException: Message: invalid argument: unrecognized capability: chromeOptions".
I have found some tips on the Internet saying that a way ChromeOptions should be used had changed, but I am unable to find how these changes exactly should look like in Python code. I'll be grateful for any helpful hint or solution.
def browser(full_url):
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
import time
options = Options()
options.add_experimental_option("prefs", {
"download.default_directory": r"C:\Users\%s\AppData\Local\Temp\\" % getpass.getuser(),
"download.prompt_for_download": False,
"download.directory_upgrade": True,
"safebrowsing.enabled": True
})
options.add_argument("--window-size=640,480")
driver = webdriver.Chrome(chrome_options=options)
try:
driver.get(full_url)
print("\nURL successfully Accessed\n")
time.sleep(9)
finally:
driver.close()
browser(full_url)
Error I got:
Traceback (most recent call last):
File "C:\Users\M\Documents\Skrypty\domains.py", line 59, in <module>
browser(full_url)
File "C:\Users\M\Documents\Skrypty\domains.py", line 46, in browser
driver = webdriver.Chrome(chrome_options=options)
File "C:\Python27\lib\site-packages\selenium\webdriver\chrome\webdriver.py", line 69, in __init__
desired_capabilities=desired_capabilities)
File "C:\Python27\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 98, in __init__
self.start_session(desired_capabilities, browser_profile)
File "C:\Python27\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 188, in start_session
response = self.execute(Command.NEW_SESSION, parameters)
File "C:\Python27\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 256, in execute
self.error_handler.check_response(response)
File "C:\Python27\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 194, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: invalid argument: unrecognized capability: chromeOptions

Answer 1

Just me guessing here but I encountered this as well. I used Python 2.7 and Selenium 3.4.1. I couldn't replicate the problem with Python 3.7 and with Selenium 3.14.0. So the changes lie probably in the changed Selenium. You should look into that.
EDIT: Yeah I just updated Selenium (to 3.14.0) and the problem went away. Now I got the driver working with both Python 2.7 and 3.7