webpage navigating and submit text with selenium[3]

we can use below actions for webpage navigating:

• driver.find_element_by_link_text(“Selenium Automate Your Login Process”)
• driver.implicitly_wait(30)
• driver.back()
• driver.forward()
• main.find_element_by_id(‘submit’).click()

  C:\Users\zhuby\hans>page_nav.py
  DevTools listening on ws://127.0.0.1:53533/devtools/browser/94c2afb2-731a-4d62-baa6-7b46d0f24fcd
  python design – explaining the world with python (zhuby1973@gmail.com)
  and you will find your comments has been posted to the site:

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
import time

PATH = "C:\Program Files\chromedriver.exe"
driver = webdriver.Chrome(PATH)

driver.get("http://pythondesign.ca")
print(driver.title)
driver.implicitly_wait(30)
link = driver.find_element_by_link_text("Selenium Automate Your Login Process")
link.click()


try:
    main = WebDriverWait(driver, 10).until(
        EC.presence_of_element_located((By.ID, "commentform"))
    )
    main.find_element_by_id('comment').click()
    main.find_element_by_id('comment').send_keys('test 3 comment')
    main.find_element_by_id('author').click()
    main.find_element_by_id('author').send_keys('Hans')
    main.find_element_by_id('email').click()
    main.find_element_by_id('email').send_keys('zhuby1973@gmail.com')
    main.find_element_by_id('submit').click()
    driver.back()
    driver.forward()
finally:
    driver.quit()