python tkinter實時顯示曲線

from tkinter import *from tkinter import ttkimport time#畫窗口root = Tk()root.geometry('1000x500')root.resizable(False, False)graph = Canvas(root, width=1000, height=550, background='black')#後面查點和刪點的時候須要畫布類graph.grid()#初始化點tracePlot=[20,20,30,30,40,50,56,78]#實現動態顯示while True:    t = time.time()    time.sleep(1)    tracePlot[3]=int(t % 100) #動態變化的數據    traceID = graph.create_line(tracePlot, fill='Red', width=2)    root.update_idletasks()    root.update()#更新顯示    graphItems = graph.find_all()    for n in graphItems:        graph.delete(n) #若是沒有刪除操做，舊點不消除，新點也會畫在上面