First time with mysql

[pascal111]

I'm a Python beginner, and tried to learn mysql, I typed this code:

import mysql.connector

mydb = mysql.connector.connect(user="pascal", database="gogo")

print(mydb) 

I tried to run the code but found errors:

pascal@pascal-Lenovo-ideapad-330-15AST:~/Computer/Python$ python3 j3.py
Traceback (most recent call last):
File "/usr/local/lib/python3.8/dist-packages/mysql/connector/connection_cext.py", line 239, in _open_connection
self._cmysql.connect(**cnx_kwargs)
_mysql_connector.MySQLInterfaceError: Can't connect to MySQL server on '127.0.0.1:3306' (111)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "j3.py", line 3, in <module>
mydb = mysql.connector.connect(user="pascal", database="gogo")
File "/usr/local/lib/python3.8/dist-packages/mysql/connector/__init__.py", line 272, in connect
return CMySQLConnection(*args, **kwargs)
File "/usr/local/lib/python3.8/dist-packages/mysql/connector/connection_cext.py", line 85, in __init__
self.connect(**kwargs)
File "/usr/local/lib/python3.8/dist-packages/mysql/connector/abstracts.py", line 1009, in connect
self._open_connection()
File "/usr/local/lib/python3.8/dist-packages/mysql/connector/connection_cext.py", line 241, in _open_connection
raise errors.get_mysql_exception(msg=exc.msg, errno=exc.errno,
mysql.connector.errors.DatabaseError: 2003 (HY000): Can't connect to MySQL server on '127.0.0.1:3306' (111)