How to set .ico icon file by iconbitmap in tkinter in python 3.8 on ubuntu

I am new to tkinter8.6 and i am using ubuntu20.04 lts, I have installed pillow 9.0,

root.title("Learn code for Iconbitmap") root.iconbitmap("current folder/1_3.ico")

even however i tried to show icon file in ico,png,xbm format, it doesn't show the icon. please anyone resolve this problem. I have the same problem in photoimage.

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