Index – U U2F (selenium.webdriver.common.virtual_authenticator.Protocol attribute) (selenium.webdriver.common.virtual_authenticator.VirtualAuthenticatorOptions.Protocol attribute) UNABLE_TO_CAPTURE_SCREEN (selenium.webdriver.remote.errorhandler.ErrorCode attribute) (selenium.webdriver.remote.errorhandler.ExceptionMapping attribute) UNABLE_TO_SET_COOKIE (selenium.webdriver.remote.errorhandler.ErrorCode attribute) (selenium.webdriver.remote.errorhandler.ExceptionMapping attribute) UnableToSetCookieException UNEXPECTED_ALERT_OPEN (selenium.webdriver.remote.errorhandler.ErrorCode attribute) (selenium.webdriver.remote.errorhandler.ExceptionMapping attribute) UnexpectedAlertPresentException UnexpectedTagNameException unhandled_prompt_behavior (selenium.webdriver.chrome.options.Options attribute) (selenium.webdriver.chromium.options.ChromiumOptions attribute) (selenium.webdriver.common.options.ArgOptions attribute) (selenium.webdriver.common.options.BaseOptions attribute) (selenium.webdriver.edge.options.Options attribute) (selenium.webdriver.firefox.options.Options attribute) (selenium.webdriver.ie.options.Options attribute) (selenium.webdriver.safari.options.Options attribute) (selenium.webdriver.webkitgtk.options.Options attribute) (selenium.webdriver.wpewebkit.options.Options attribute) uninstall_addon() (selenium.webdriver.firefox.webdriver.WebDriver method) UNKNOWN_COMMAND (selenium.webdriver.remote.errorhandler.ErrorCode attribute) UNKNOWN_ERROR (selenium.webdriver.remote.errorhandler.ErrorCode attribute) (selenium.webdriver.remote.errorhandler.ExceptionMapping attribute) UNKNOWN_METHOD (selenium.webdriver.remote.errorhandler.ErrorCode attribute) (selenium.webdriver.remote.errorhandler.ExceptionMapping attribute) UnknownMethodException unpin() (selenium.webdriver.chrome.webdriver.WebDriver method) (selenium.webdriver.chromium.webdriver.ChromiumDriver method) (selenium.webdriver.edge.webdriver.WebDriver method) (selenium.webdriver.firefox.webdriver.WebDriver method) (selenium.webdriver.ie.webdriver.WebDriver method) (selenium.webdriver.remote.webdriver.WebDriver method) (selenium.webdriver.safari.webdriver.WebDriver method) (selenium.webdriver.webkitgtk.webdriver.WebDriver method) (selenium.webdriver.wpewebkit.webdriver.WebDriver method) UNSPECIFIED (selenium.webdriver.common.proxy.ProxyType attribute) until() (selenium.webdriver.support.ui.WebDriverWait method) (selenium.webdriver.support.wait.WebDriverWait method) until_not() (selenium.webdriver.support.ui.WebDriverWait method) (selenium.webdriver.support.wait.WebDriverWait method) UP (selenium.webdriver.common.keys.Keys attribute) update_preferences() (selenium.webdriver.firefox.firefox_profile.FirefoxProfile method) UPLOAD_FILE (selenium.webdriver.remote.command.Command attribute) upper() (selenium.webdriver.common.options.PageLoadStrategy method) (selenium.webdriver.common.virtual_authenticator.Protocol method) (selenium.webdriver.common.virtual_authenticator.Transport method) (selenium.webdriver.common.virtual_authenticator.VirtualAuthenticatorOptions.Protocol method) (selenium.webdriver.common.virtual_authenticator.VirtualAuthenticatorOptions.Transport method) url_changes() (in module selenium.webdriver.support.expected_conditions) url_contains() (in module selenium.webdriver.support.expected_conditions) url_matches() (in module selenium.webdriver.support.expected_conditions) url_to_be() (in module selenium.webdriver.support.expected_conditions) USB (selenium.webdriver.common.virtual_authenticator.Transport attribute) (selenium.webdriver.common.virtual_authenticator.VirtualAuthenticatorOptions.Transport attribute) USE_LEGACY_FILE_UPLOAD_DIALOG_HANDLING (selenium.webdriver.ie.options.Options attribute) use_legacy_file_upload_dialog_handling (selenium.webdriver.ie.options.Options attribute) USE_PER_PROCESS_PROXY (selenium.webdriver.ie.options.Options attribute) use_per_process_proxy (selenium.webdriver.ie.options.Options attribute) use_technology_preview (selenium.webdriver.safari.options.Options attribute) use_webview (selenium.webdriver.edge.options.Options property) UselessFileDetector (class in selenium.webdriver.remote.file_detector) user_agent (selenium.webdriver.chrome.remote_connection.ChromeRemoteConnection attribute) (selenium.webdriver.chromium.remote_connection.ChromiumRemoteConnection attribute) (selenium.webdriver.edge.remote_connection.EdgeRemoteConnection attribute) (selenium.webdriver.firefox.remote_connection.FirefoxRemoteConnection attribute) (selenium.webdriver.remote.remote_connection.RemoteConnection attribute) (selenium.webdriver.safari.remote_connection.SafariRemoteConnection attribute) user_handle (selenium.webdriver.common.virtual_authenticator.Credential property)