如何创建刻度，使用键盘箭头控制刻度，以及使用tkinter记录单个值

from tkinter import *

root = Tk()
scale = Scale(root, from_=0, to=100, resolution=1)
scale.pack()

root.mainloop()

from tkinter import *

def on_key(event):
    if event.keysym == 'Up':
        scale.set(scale.get() + 1)
    elif event.keysym == 'Down':
        scale.set(scale.get() - 1)

root = Tk()
scale = Scale(root, from_=0, to=100, resolution=1)
scale.pack()
root.bind('<Key>', on_key)

root.mainloop()

from tkinter import *

def get_value():
    value = scale.get()
    label.config(text="当前值：" + str(value))

root = Tk()
scale = Scale(root, from_=0, to=100, resolution=1)
scale.pack()

button = Button(root, text="获取值", command=get_value)
button.pack()

label = Label(root, text="当前值：")
label.pack()

root.mainloop()