os:windows 7 selenium version 3.0.1 mozilla firefox:48.0.2
Traceback (most recent call last):
File "C:\Users\LENOVO\Desktop\kk2.py", line 4, in <module>
driver = webdriver.Firefox()
File "C:\Python27\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 135, in __init__
self.service.start()
File "C:\Python27\lib\site-packages\selenium\webdriver\common\service.py", line 71, in start
os.path.basename(self.path), self.start_error_message)
WebDriverException: Message: 'geckodriver' executable needs to be in PATH.
please give information step by step thoroughly please actually i am learner