Misleading error message when selenium is not installed

[turicas]

I have a virtualenv with splinter installed and tried to run this code:

from splinter import Browser
browser = Browser("firefox")

Then, this error happened:

splinter.exceptions.DriverNotFoundError: Driver for firefox was not found.

But geckodriver was in my $PATH, so the driver exists.

By inspecting splinter code I found this try/except:

try:
    from splinter.driver.webdriver.chrome import WebDriver as ChromeWebDriver
    from splinter.driver.webdriver.firefox import WebDriver as FirefoxWebDriver
    from splinter.driver.webdriver.remote import WebDriver as RemoteWebDriver

    _DRIVERS["chrome"] = ChromeWebDriver
    _DRIVERS["firefox"] = FirefoxWebDriver
    _DRIVERS["remote"] = RemoteWebDriver
except ImportError as e:
    logger.debug(f"Import Warning: {e}")

This is going to fail if selenium is not installed, which will lead to this misleading error message in Browser function:

    if driver is None:
        raise DriverNotFoundError(f"Driver for {driver_name} was not found.")

This message seems to be related to the driver executable itself (like geckodriver, chromedriver etc.), not for missing selenium (the concepts of a splinter driver and a selenium driver mix here).