how to change widge's state

state_change.py

import ctypes
import tkinter


def disable_10_times_clicked():
    b["text"] = b["text"] + 1   #count click number

    if b["text"] == 10:
        b["state"] = "disable"  #disable button


if __name__ == "__main__":
    ctypes.windll.shcore.SetProcessDpiAwareness(1)
    root = tkinter.Tk()

    b = tkinter.Button(
        root,
        width=15,
        text=0,
        command=disable_10_times_clicked,    #クリック時に実行する関数
    )
    b.pack()

    root.mainloop()