Tkinter标签图像变为空白

Question

我正在编写的这段代码应该在每次单击按钮时添加一张图片，但是当我执行了多次操作后，最后一张图片就会消失。

import tkinter

suits = ["club", "heart", "diamond", "spade"]
faces = ["jack", "queen", "king"]


def deal():
    global value
    global card
    global deck
    value, card = deck.pop(0)
    print(deck)
    return card

def image():
    global count
    tkinter.Label(root, image=deal()).grid(row=1, column=count)
    count += 1

root = tkinter.Tk()

deck = []

for x in range(1, 11):
    for y in suits:
        pic = "cards/{}_{}.png".format(x, y)
        img = tkinter.PhotoImage(file=pic)
        deck.append((x, img))

    for z in faces:
        pic = "cards/{}_{}.png".format(z, y)
        img = tkinter.PhotoImage(file=pic)
        deck.append((10, img))

value, card = deck.pop(0)
count = 0

tkinter.Button(root, text="Click me", command=image).grid(row=0, column=0)
root.mainloop()

我该如何解决？

Answer 1

问题在于，当您再次致电deal时，存储在card的PhotoImage被另一card替代，因此被垃圾回收并消失了。 为防止这种情况，您可以创建图片列表：

import tkinter

suits = ["club", "heart", "diamond", "spade"]
faces = ["jack", "queen", "king"]
pictures = []

def deal():
    global value
    global card
    global deck
    value, card = deck.pop(0)
    print(deck)
    return card

def image():
    global count
    tkinter.Label(root, image=deal()).grid(row=1, column=count)
    count += 1

root = tkinter.Tk()

deck = []

for x in range(1, 11):
    for y in suits:
        pic = "cards/{}_{}.png".format(x, y)
        img = tkinter.PhotoImage(file=pic)
        pictures.append(img)
        deck.append((x, img))

    for z in faces:
        pic = "cards/{}_{}.png".format(z, y)
        img = tkinter.PhotoImage(file=pic)
        pictures.append(img)
        deck.append((10, img))

value, card = deck.pop(0)
count = 0

tkinter.Button(root, text="Click me", command=image).grid(row=0, column=0)
root.mainloop()