Question

我有这段代码：

for imgTag in outputS:
    print(imgTag["src"])

root = tk.Tk()

for imgTag in outputS:
    url = imgTag["src"]
    with urllib.request.urlopen(url) as u:
        raw_data = u.read()
    im = Image.open(BytesIO(raw_data))
    image = ImageTk.PhotoImage(im)
    image.im = image
    label = tk.Label(root, image=image)
    label.pack( side = tk.BOTTOM)

root.mainloop()

它在命令行中生成：

http://images.sportinglife.com/racing/tsilks/92913.png
http://images.sportinglife.com/racing/tsilks/320898.png
http://images.sportinglife.com/racing/tsilks/6962.png
http://images.sportinglife.com/racing/tsilks/351124.png
http://images.sportinglife.com/racing/tsilks/239668.png
http://images.sportinglife.com/racing/tsilks/375038.png
http://images.sportinglife.com/racing/tsilks/201969.png
http://images.sportinglife.com/racing/tsilks/441.png
http://images.sportinglife.com/racing/tsilks/2384.png
http://images.sportinglife.com/racing/tsilks/363428.png
http://images.sportinglife.com/racing/tsilks/1828.png
http://images.sportinglife.com/racing/tsilks/226478.png
http://images.sportinglife.com/racing/tsilks/4966.png
http://images.sportinglife.com/racing/tsilks/375018.png
http://images.sportinglife.com/racing/tsilks/17484.png

然而，有些图像显示在tkinter窗口中，有些则没有。对于每个png链接列表，我在那里看起来似乎不是一个可呈现的可呈现模式，哪些没有，尽管对于每个列表，相同的那些总是被呈现。例如：list1 = [1,2,3,4,5]，list 2 = [1,2,3,4,5]。列表1将始终呈现图像1,3,4，列表2将始终呈现2,3。

在另一个python文件中我有：

for x in range(0, num_horses):
    row1 = tk.Frame(root)
    row1.pack(side = tk.TOP)

    label = tk.Label(row1, text="horse " + str(x + 1))
    label.pack(side = tk.LEFT)

    imgTag = outputS[x]
    url = imgTag["src"]
    with urllib.request.urlopen(url) as u:
        raw_data = u.read()
    im = Image.open(BytesIO(raw_data))
    image = ImageTk.PhotoImage(im)
    image.im = image
    label = tk.Label(row1, image=image)
    label.pack( side = tk.LEFT)

    b1 = tk.Button(row1, text="back", command = lambda x=x: backHorse(x + 1))
    b1.pack( side = tk.LEFT )

    b2 = tk.Button(row1, text="lay", command = lambda x=x: layHorse(x + 1))
    b2.pack( side = tk.LEFT )

当在与第一个python相同的链接列表上运行时，它们会根据呈现的图像产生不同的结果，但它们对于应用程序始终是相同的。例如：在列表[1,2,3,4,5]上，我在这篇文章中展示的第一个代码片段始终显示图像1,2,4，第二个代码始终显示图像2,5

Answer 1

garbage collector可能存在一些问题，可能会删除PhotoImage，因此您必须分配给变量。

但不是

image.im = image

没有意义。

你需要

label.im = image

适用于我的完整版

import tkinter as tk
import urllib.request
from PIL import Image, ImageTk
from io import BytesIO

data = [
'http://images.sportinglife.com/racing/tsilks/92913.png',
'http://images.sportinglife.com/racing/tsilks/320898.png',
'http://images.sportinglife.com/racing/tsilks/6962.png',
'http://images.sportinglife.com/racing/tsilks/351124.png',
'http://images.sportinglife.com/racing/tsilks/239668.png',
'http://images.sportinglife.com/racing/tsilks/375038.png',
'http://images.sportinglife.com/racing/tsilks/201969.png',
'http://images.sportinglife.com/racing/tsilks/441.png',
'http://images.sportinglife.com/racing/tsilks/2384.png',
'http://images.sportinglife.com/racing/tsilks/363428.png',
'http://images.sportinglife.com/racing/tsilks/1828.png',
'http://images.sportinglife.com/racing/tsilks/226478.png',
'http://images.sportinglife.com/racing/tsilks/4966.png',
'http://images.sportinglife.com/racing/tsilks/375018.png',
'http://images.sportinglife.com/racing/tsilks/17484.png',
]

root = tk.Tk()

for url in data:

    with urllib.request.urlopen(url) as u:
        raw_data = u.read()

    image = Image.open(BytesIO(raw_data))
    photo = ImageTk.PhotoImage(image)

    label = tk.Label(root, image=photo)
    label.photo = photo
    label.pack()

root.mainloop()

顺便说一句：通常在函数或类中创建PhotoImage时会出现问题，但在for循环中可能存在同样的问题。

http://effbot.org/tkinterbook/photoimage.htm

Python tkinter图像标签随机显示一些图像，但不显示其他图像

1 个答案: