A problem with using selenium

[Truman]

from selenium import webdriver
browser = webdriver.Firefox()
print(type(browser))
browser.get('http://inventwithpython.com')

In IDLE I receive these traceback errors, don't understand a thing.

Error:
Traceback (most recent call last):
  File "C:\Python36\lib\site-packages\selenium\webdriver\common\service.py", line 76, in start
    stdin=PIPE)
  File "C:\Python36\lib\subprocess.py", line 709, in __init__
    restore_signals, start_new_session)
  File "C:\Python36\lib\subprocess.py", line 997, in _execute_child
    startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<pyshell#1>", line 1, in <module>
    browser = webdriver.Firefox()
  File "C:\Python36\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 157, in __init__
    self.service.start()
  File "C:\Python36\lib\site-packages\selenium\webdriver\common\service.py", line 83, in start
    os.path.basename(self.path), self.start_error_message)
selenium.common.exceptions.WebDriverException: Message: 'geckodriver' executable needs to be in PATH. 

>>> print(type(browser))
Traceback (most recent call last):
  File "<pyshell#2>", line 1, in <module>
    print(type(browser))
NameError: name 'browser' is not defined
>>> browser.get('http://inventwithpython.com')
Traceback (most recent call last):
  File "<pyshell#3>", line 1, in <module>
    browser.get('http://inventwithpython.com')
NameError: name 'browser' is not defined

[mlieqo]

You need to download latest geckodriver from here - LINK and then update the Path system variable to add the full directory path to the executable geckodriver.

[Truman]

Thank you. I downloaded it and unzipped in Python folder. Interestingly, didn't need to updatethe Path system variable.