Python-connected Ubuntu system MySQL Error solution

This error occurs

First, see if the port of the virtual machine is open

Whether the firewall is off

Both the account number and the password are correct.

If it's right or not, it could be MySQL's permission problem.

First, check the MySQL remote login problem

Set up in MySQL
Grant all privileges the "root" @ "%" with grant option;
Flush privileges;
Allow Root Login
Or not, just check the MySQL configuration file mysqld.cnf

Find bind-address = 127.0.0.1 comment out
Bind-address is the host IP of the MySQL monitor if only listen to this machine, then remote also log on,
and restart MySQL.
Wait
Wait
There's a miracle.

It's connected, it's successful.

Python-connected Ubuntu system MySQL Error solution