mysql数据库连接错了

import mysql.connector

try:
    conn = mysql.connector.connect(
        host="localhost",
        user="yourusername",
        password="yourpassword",
        database="yourdatabase"
    )
except mysql.connector.Error as err:
    print(f"Error: {err}")

from mysql.connector.pooling import MySQLConnectionPool

pool = MySQLConnectionPool(pool_name="mypool",
                            pool_size=5,
                            host='localhost',
                            database='yourdatabase',
                            user='yourusername',
                            password='yourpassword')

try:
    conn = pool.get_connection()
except mysql.connector.Error as err:
    print(f"Error: {err}")

import logging

logging.basicConfig(level=logging.DEBUG)