tkinter 数当てゲーム

from random import randint

def get():
    number = guess.get()

    if number < random_number:
        hint.set("Higher!")
        root.after(1000, clear_hint)
    elif number > random_number:
        hint.set("Lower!")
        root.after(1000, clear_hint)
    else:
        hint.set("Well guessed!")
        root.after(5000, setup)

def setup():
    global random_number

    random_number = randint(1, 100)
    guess.set(0)
    hint.set("Start Guessing!")
    root.after(5000, clear_hint)

def clear_hint():
    hint.set("")

root = tk.Tk()
root.geometry("300x200")
root.title("数当てゲーム(1-100)")
hint = tk.StringVar()
guess = tk.IntVar()

random_number = 0

tk.Entry(textvariable=guess).grid(column=0, row=0)
tk.Button(root, text="Guess", command=get).grid(column=1, row=0)
tk.Label(root, textvariable=hint).grid(column=0, row=1)

setup()