Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/mysql/connector/network.py", line 509, in open_connection
    self.sock.connect(sockaddr)
ConnectionRefusedError: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "vaseis.py", line 260, in <module>
    main()
  File "vaseis.py", line 5, in main
    cnx = mysql.connector.connect(user="root", password="yourpassword", database="DB")
  File "/usr/local/lib/python3.6/dist-packages/mysql/connector/__init__.py", line 179, in connect
    return MySQLConnection(*args, **kwargs)
  File "/usr/local/lib/python3.6/dist-packages/mysql/connector/connection.py", line 94, in __init__
    self.connect(**kwargs)
  File "/usr/local/lib/python3.6/dist-packages/mysql/connector/abstracts.py", line 722, in connect
    self._open_connection()
  File "/usr/local/lib/python3.6/dist-packages/mysql/connector/connection.py", line 207, in _open_connection
    self._socket.open_connection()
  File "/usr/local/lib/python3.6/dist-packages/mysql/connector/network.py", line 512, in open_connection
    errno=2003, values=(self.get_address(), _strioerror(err)))
mysql.connector.errors.InterfaceError: 2003: Can't connect to MySQL server on '127.0.0.1:3306' (111 Connection refused)