how to enable google chrome rahter than chromeriver for selenium python code example

Example: selenium chrome python

import timefrom selenium import webdriverdriver = webdriver.Chrome('/path/to/chromedriver')  # Optional argument, if not specified will search path.driver.get('http://www.google.com/');time.sleep(5) # Let the user actually see something!search_box = driver.find_element_by_name('q')search_box.send_keys('ChromeDriver')search_box.submit()time.sleep(5) # Let the user actually see something!driver.quit()