HTML code changing but not the url (Selenium WebDriver) [duplicate] - selenium

Question

I am getting this error when i am trying to enter username and password automatically on twitter website using Firefox browser:
selenium.common.exceptions.NoSuchElementException: Message: Unable to locate element: .session[username_or_email]
The set of code i wrote so far is as follows:
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
import time
class TwitterBot:
def __init__(self,username,password):
self.username = username
self.password = password
self.bot = webdriver.Firefox()
def login(self):
bot = self.bot
bot.get('https://twitter.com/')
time.sleep(3)
bot.maximize_window()
bot.implicitly_wait(3)
email = bot.find_element_by_class_name('session[username_or_email]')
password = bot.find_element_by_class_name('session[password]')
email.clear()
password.clear()
email.send_keys(self.username)
password.send_keys(self.password)
run = TwitterBot('jok.moe#hotmail.com', '123456')
run.login()
Does anyone have any idea how to fix this ?

Answer 1

The element looks like:
<input class="js-username-field email-input js-initial-focus" type="text" name="session[username_or_email]" autocomplete="on" value="" placeholder="Phone, email or username">
So you could do something like:
email = bot.find_element_by_xpath('//input[#name="session[username_or_email]"]')

Answer 2

Seems you were pretty close. To send a character sequence to the Email and Password fields, you have to induce WebDriverWait for the element_to_be_clickable() and you can use either of the following Locator Strategies:
Using CSS_SELECTOR:
from selenium import webdriver
from selenium.webdriver.firefox.options import Options
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
class TwitterBot:
def __init__(self,username,password):
self.username = username
self.password = password
options = Options()
options.binary_location = r'C:\Program Files\Firefox Nightly\firefox.exe'
self.bot = webdriver.Firefox(firefox_options=options, executable_path=r'C:\WebDrivers\geckodriver.exe')
def login(self):
bot = self.bot
bot.get('https://twitter.com/login')
WebDriverWait(bot, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "input.js-username-field.email-input.js-initial-focus[name='session[username_or_email]']"))).send_keys(self.username)
bot.find_element_by_css_selector("input.js-password-field[name='session[password]']").send_keys(self.password)
run = TwitterBot('jok.moe#hotmail.com', '123456')
run.login()
Using XPATH:
from selenium import webdriver
from selenium.webdriver.firefox.options import Options
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
class TwitterBot:
def __init__(self,username,password):
self.username = username
self.password = password
options = Options()
options.binary_location = r'C:\Program Files\Firefox Nightly\firefox.exe'
self.bot = webdriver.Firefox(firefox_options=options, executable_path=r'C:\WebDrivers\geckodriver.exe')
def login(self):
bot = self.bot
bot.get('https://twitter.com/login')
WebDriverWait(bot, 20).until(EC.element_to_be_clickable((By.XPATH, "//input[#class='js-username-field email-input js-initial-focus' and #name='session[username_or_email]']"))).send_keys(self.username)
bot.find_element_by_xpath("//input[#class='js-password-field' and #name='session[password]']").send_keys(self.password)
run = TwitterBot('jok.moe#hotmail.com', '123456')
run.login()
Browser Snapshot: