python持续显示图片

要实现Python持续显示图片，可以使用tkinter库和PIL库。下面是几种方法：

方法一：

from tkinter import *
from PIL import ImageTk, Image

class Test(object):
    def __init__(self, master):
        self.root = master
        self._label = None
        self._img = None
        self._page()

    def _page(self):
        Button(self.root, text='显示图片', command=self.choose_pic).pack()
        self._label = Label(self.root, image=None)
        self._label.pack()
        self.root.mainloop()

    def choose_pic(self):
        img_open = Image.open('./1.jpg')
        self._img = ImageTk.PhotoImage(img_open)
        self._label.configure(image=self._img)

if __name__ == '__main__':
    window = Tk()
    Test(window)
    window.mainloop()

方法二：

from tkinter import *
from PIL import ImageTk, Image

def choose_pic():
    img_open = Image.open('./1.jpg')
    img = ImageTk.PhotoImage(img_open)
    _label.configure(image=img)

if __name__ == '__main__':
    root = Tk()
    root.wm_minsize(900, 600)
    Button(root, text='显示图片', command=choose_pic).pack()
    _label = Label(root, image=None)
    _label.pack()
    root.mainloop()

方法三：

from tkinter import *
from PIL import ImageTk, Image

def choose_pic():
    img_open = Image.open('./1.jpg')
    img = ImageTk.PhotoImage(img_open)
    _label.configure(image=img)
    _label.image = img # keep a reference

if __name__ == '__main__':
    root = Tk()
    root.wm_minsize(900, 600)
    Button(root, text='显示图片', command=choose_pic).pack()
    _label = Label(root, image=None)
    _label.pack()
    root.mainloop()