MySQL MacOS: You must reset your password using ALTER USER statement before executing this statement.

If you get this message after install MySQL in MacOS:

You must reset your password using ALTER USER statement before executing this statement.

It is neccesary to reset the temporary password that was generated for root@localhost.

Open a session of Terminal:

Press "cmd + space" = Spotlight: type: Terminal

Type: the next statement, and type the emporary passwor, then alter (change) the password.

/usr/local/mysql/bin/mysql -uroot -p;
Enter password: 

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 15
Server version: 5.7.18

Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'NEWPASS';
Query OK, 0 rows affected (0.00 sec)

Lines up in red are the solution