authentication error in Connecting remote MySQL database through Python

I'm getting authentication error in connecting to remote Mysql. Code:

import MySQLdb as mdb

con = mdb.connect(host='xxx',port=3306,user= 'user', passwd='123',db= 'stellar')
cur = con.cursor()
cur.execute('show tables')
for r in cur:
    print(r)

Error:

Traceback (most recent call last):
  File "C:/staging_files/test.py", line 5, in <module>
    con = mdb.connect(host='xxx',port=3306,user= 'user', passwd='123',db= 'stellar')
  File "C:\Python34\lib\site-packages\MySQLdb\__init__.py", line 81, in Connect
    return Connection(*args, **kwargs)
  File "C:\Python34\lib\site-packages\MySQLdb\connections.py", line 204, in __init__
    super(Connection, self).__init__(*args, **kwargs2)
_mysql_exceptions.OperationalError: (1045, "Access denied for user 'user'@'10.212.148.49' (using password: YES)")

I tried some of solutions suggested here. I ran command on Windows server hosting MySQL-

GRANT ALL ON DB.stellar TO user@xxx IDENTIFIED BY '123';

I also added- bind-address = 0.0.0.0 to my-default.cnf file