无法调出mysql数据

import mysql.connector

try:
    conn = mysql.connector.connect(
        host="localhost",
        user="your_username",
        password="your_password",
        database="your_database"
    )
    if conn.is_connected():
        print("Connected to MySQL database")
except mysql.connector.Error as err:
    print(f"Error: '{err}'")
finally:
    if conn.is_connected():
        conn.close()

import mysql.connector

try:
    conn = mysql.connector.connect(
        host="localhost",
        user="your_username",
        password="your_password",
        database="your_database"
    )
    cursor = conn.cursor()
    query = "SELECT * FROM your_table"
    cursor.execute(query)
    result = cursor.fetchall()
    for row in result:
        print(row)
except mysql.connector.Error as err:
    print(f"Error: '{err}'")
finally:
    if conn.is_connected():
        cursor.close()
        conn.close()

-- 授予用户权限
GRANT SELECT, INSERT, UPDATE, DELETE ON your_database.your_table TO 'your_username'@'localhost';
FLUSH PRIVILEGES;