找不到mysql的数据库文件

sudo chown -R mysql:mysql /var/lib/mysql

[mysqld]
datadir=/var/lib/mysql

sudo systemctl start mysql

sudo fsck /dev/sda1

import mysql.connector

try:
    connection = mysql.connector.connect(
        host="localhost",
        user="yourusername",
        password="yourpassword"
    )
    if connection.is_connected():
        db_Info = connection.get_server_info()
        print("Connected to MySQL Server version ", db_Info)
        cursor = connection.cursor()
        cursor.execute("select database();")
        record = cursor.fetchone()
        print("You're connected to database: ", record)
except mysql.connector.Error as e:
    print("Error while connecting to MySQL", e)
finally:
    if connection.is_connected():
        cursor.close()
        connection.close()
        print("MySQL connection is closed")