[py] raise exception when creating webdriver.Remote() without options

Author: cgoldberg

py/selenium/webdriver/remote/webdriver.py

@@ -221,7 +221,11 @@ def __init__(
             - Custom client configuration to use. Defaults to None.
         """
 
-        if isinstance(options, list):
+        if options is None:
+            raise TypeError(
+                "missing 1 required keyword-only argument: 'options' (instance of driver `options.Options` class)"
+            )
+        elif isinstance(options, list):
             capabilities = create_matches(options)
             _ignore_local_proxy = False
         else: