mysql.connector.errors.ProgrammingError: 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

import mysql.connector
cnx = mysql.connector.connect(user = 'root')

cnx = mysql.connector.connect(user = 'root', password = 'supplied_pass')
mysql.connector.errors.DatabaseError: 1862 (HY000): Your password has expired. To log in you must change it using a client that supports expired passwords.