How can i display image from mysql to python gui ?

I am trying , like this :

from tkinter import *
from io import BytesIO
window= Tk()
db=MySQLdb.connect("localhost","root","??","??")
cursor=db.cursor()
sql= "SELECT LOGO FROM SYSTEMDETAILS" cursor.execute(sql)
logo=cursor.fetchone()
img = Image.open(BytesIO(logo))
phimg = ImageTk.PhotoImage(img)
panel = Label(window, image = phimg)
panel.pack()

When i run this, it show error in line 9 , it want logo as an object but in here its tuple

从提供的 MySQLdb 连接、SELECT LOGO 查询、cursor.fetchone() 以及报告的第 9 行附近的 Image.open(BytesIO(logo)) 调用开始。运行代码片段并检查 fetchone() 返回的值；当获取的 logo 被图像加载路径接受并显示在 Tkinter 窗口中时，即表示完成。