facebook login selenium

#importing required libraries
from selenium import webdriver
import time

# selectinng browser
driver = webdriver.Chrome()

def login(usr,pss):
    #to open facebook login page
    driver.get("https://www.facebook.com/")
    time.sleep(3) #wait to load page
    usr_ent = driver.find_element_by_xpath("//*[@id='email']") #find email bar
    usr_ent.clear() #clear email bar
    usr_ent.send_keys(usr) #pass email in email bar
    time.sleep(2) #wait for 2 seconds


    pas_ent= driver.find_element_by_xpath("//*[@id='pass']") # finding password baar
    pas_ent.clear() #clearing assword bar
    pas_ent.send_keys(pss) #pass  password in password bar
    time.sleep(2) #wait for 2 seconds
    login = driver.find_element_by_xpath("//*[@id='u_0_b']") # to find log in button
    login.click() # click on login button
email = 'Your Email Id or Phone Number'
password = 'Your Password'
login(email,password)