AttributeError: 'module' object has no attribute 'FireFox' about whole-foods-delivery-slot HOT 4 CLOSED

C:/Users/ignam/Desktop/Whole-Foods-Delivery-Slot-master/whole_foods_delivery_slot_firefox.py:14: UserWarning: No parser was explicitly specified, so I'm using the best available HTML parser for this system ("html.parser"). This usually isn't a problem, but if you run this code on another system, or in a different virtual environment, it may use a different parser and behave differently.

The code that caused this warning is on line 14 of the file C:/Users/ignam/Desktop/Whole-Foods-Delivery-Slot-master/whole_foods_delivery_slot_firefox.py. To get rid of this warning, pass the additional argument 'features="html.parser"' to the BeautifulSoup constructor.

  soup = bs4.BeautifulSoup(html)
Traceback (most recent call last):
  File "C:/Users/ignam/Desktop/Whole-Foods-Delivery-Slot-master/whole_foods_delivery_slot_firefox.py", line 46, in <module>
    getWFSlot('https://www.amazon.com/gp/buy/shipoptionselect/handlers/display.html?hasWorkingJavascript=1')
  File "C:/Users/ignam/Desktop/Whole-Foods-Delivery-Slot-master/whole_foods_delivery_slot_firefox.py", line 19, in getWFSlot
    driver.refresh()
  File "C:\Python27\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 831, in refresh
    self.execute(Command.REFRESH)
  File "C:\Python27\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "C:\Python27\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchWindowException: Message: Browsing context has been discarded