from datetime import datetime

def token(user_identifier, creation_datetime, secret):
	return ""
	
def generate_secret(bits):
	return ""

def verify_token(token, user_identifier, creation_time, secret):
	return ""
from datetime import datetime

def token(user_identifier, creation_datetime, secret):
	return ""
	
def generate_secret(bits):
	return ""

def verify_token(token, user_identifier, creation_datetime, secret):
	return ""
Fix typing inconsistency.