Проблемы с передачей переменной Python?

from selenium import webdriver
from time import sleep
from selenium.webdriver.common.keys import Keys
login = 
password = ""
message = str(input('Enter: '))
class Bot:
	def __init__(self):
		self.driver = webdriver.Firefox()
		self.navigate()

	def navigate(self):
		self.driver.get("https://vk.com/")
		field_number = self.driver.find_element_by_xpath('//input[@id="index_email"]')
	 	field_number.send_keys(login)
	 	field_password = self.driver.find_element_by_xpath('//input[@id="index_pass"]')
	 	field_password.send_keys(password)
	 	button = self.driver.find_element_by_xpath('//button[@id="index_login_button"]')
	 	button.click()
	 	sleep(1.5)
	 	self.driver.get("https://vk.com/im")
	 	a_message = self.driver.find_element_by_xpath('//li[@class="nim-dialog _im_dialog _im_dialog_22581127 nim-dialog_unread   nim-dialog_classic"]')
	 	a_message.click()
	 	sleep(1.5)
	 	send_message = self.driver.find_element_by_xpath('//div[@id="im_editable0"]')
	 	send_message.send_keys(message)
		send_message.send_keys(Keys.RETURN)

def main():
	b = Bot()

if __name__=="__main__":
	main()

Enter: Hello
Traceback (most recent call last):
  File "vk.py", line 6, in <module>
    message = str(input('Enter: '))
  File "<string>", line 1, in <module>
NameError: name 'Hello' is not defined