Python 标签图像不存在，但 os.path 说它存在

Question

这是让我发疯的代码:

from tkinter import*
import os.path
class About:
    def __init__(self):
        font1='tahoma 12'
        win=Tk()
        print(os.path.isfile('logo.gif'))#It returns true
        Label(win,image="logo.gif").pack()                
About()

Answer 1

Label(win,image="logo.gif").pack()

image 参数不接受文件名。根据this教程，“该值应该是 PhotoImage、BitmapImage 或兼容对象。”接下来讨论您应该使用的 PhotoImage 类。

You can use the label to display PhotoImage and BitmapImage objects. When doing this, make sure you keep a reference to the image object, to prevent it from being garbage collected by Python’s memory allocator. You can use a global variable or an instance attribute, or easier, just add an attribute to the widget instance:

photo = PhotoImage(file="icon.gif")
w = Label(parent, image=photo)
w.photo = photo
w.pack()