Cannot running the file in selenium

Question

I jut got installed and learnd about automation. And then when I wanna run this code:

from selenium import webdriver

driver = webdriver.Chrome()

driver.get("https://www.google.com")

there's an error like this line :

$ C:/Users/HELLO/AppData/Local/Programs/Python/Python39/python.exe d:/Lain-lain/belajarSele.py Traceback (most recent call last): File "C:\Users\HELLO\AppData\Local\Programs\Python\Python39\lib\site-packages\selenium\webdriver\common\service.py", line 72, in start self.process = subprocess.Popen(cmd, env=self.env, File "C:\Users\HELLO\AppData\Local\Programs\Python\Python39\lib\subprocess.py", line 951, in init self._execute_child(args, executable, preexec_fn, close_fds, File "C:\Users\HELLO\AppData\Local\Programs\Python\Python39\lib\subprocess.py", line 1420, in _execute_child
hp, ht, pid, tid = _winapi.CreateProcess(executable, args, 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 "d:\Lain-lain\belajarSele.py", line 3, in driver = webdriver.Chrome() File "C:\Users\HELLO\AppData\Local\Programs\Python\Python39\lib\site-packages\selenium\webdriver\chrome\webdriver.py", line 73, in init self.service.start() File "C:\Users\HELLO\AppData\Local\Programs\Python\Python39\lib\site-packages\selenium\webdriver\common\service.py", line 81, in start raise WebDriverException( selenium.common.exceptions.WebDriverException: Message: 'chromedriver' executable needs to be in PATH. Please see https://sites.google.com/a/chromium.org/chromedriver/home

What should I do?