python Tkinter的图片刷新实例

import tkinter

_ImportError: No module named tkinter_

import Tkinter

from Tkinter import *
from PIL import Image, ImageTk
import time
import os
import cv2
num=0
tk=Tk()
canvas=Canvas(tk,width=500,height=500,bg = 'white')
while num<7:
 num +=1
 filename = str(num) + '.jpg'
 if os.path.isfile(filename):
 img1 = cv2.imread(filename)
 im1 = Image.fromarray(cv2.cvtColor(img1,cv2.COLOR_BGR2RGB)) 
 img = ImageTk.PhotoImage(image = im1)
 #img = ImageTk.PhotoImage(file = filename)
 itext = canvas.create_image((250,150),image = img)
 canvas.pack()
 tk.update()
 tk.after(1000)
tk.mainloop()

tk.updata()

#coding=utf-8
import Tkinter as tk
from PIL import Image, ImageTk
import cv2
import os
import time

def btnHelloClicked():
 labelHello.config(text = "Hello Tkinter!")

def resize(w,h,w_box,h_box,im):
 f1 = 1.0*w_box/w
 f2 = 1.0*h_box/h
 factor = min([f1, f2])
 width = int(w*factor)
 height = int(h*factor)
 return im.resize((width,height),Image.ANTIALIAS)

top = tk.Tk()
#-------------- image 1 --------------
for N in range(1,10):
 filename = str(N) + '.jpg'
 if os.path.isfile(filename):
 #top = tk.Toplevel()#tk.Tk()
 top.title("test the net.")
 #string
 labelHello = tk.Label(top,text = str(N),height = 5,width = 20,fg = "blue")
 labelHello.grid(row = 0,column = 1)
 img1 = cv2.imread(filename)
 im1 = Image.fromarray(cv2.cvtColor(img1,cv2.COLOR_BGR2RGB))
 #---resize the image to w_box*h_box
 w_box = 500
 h_box = 450
 w,h = im1.size
 im_resized1 = resize(w,h,w_box,h_box,im1)

 bm1 = ImageTk.PhotoImage(image = im_resized1)
 label1 = tk.Label(top,image = bm1,width = w_box,height = h_box)
 label1.grid(row = 1,column = 0)
 top.update()
 top.after(1000) 
top.mainloop()

_tkinter.TclError: image "pyimage2" doesn't exist