Python button选取本地图片并显示的实例

从本地文件夹中选取一张图片并在canvas上显示

from tkinter import *
from tkinter import filedialog
from PIL import Image, ImageTk

if __name__ == "__main__":
 root = Tk()

#setting up a tkinter canvas with scrollbars
 frame = Frame(root, bd=2, relief=SUNKEN)
 frame.grid_rowconfigure(0, weight=1)
 frame.grid_columnconfigure(0, weight=1)
 xscroll = Scrollbar(frame, orient=HORIZONTAL)
 xscroll.grid(row=1, column=0, sticky=E+W)
 yscroll = Scrollbar(frame)
 yscroll.grid(row=0, column=1, sticky=N+S)
 canvas = Canvas(frame, bd=0, xscrollcommand=xscroll.set, yscrollcommand=yscroll.set)
 canvas.grid(row=0, column=0, sticky=N+S+E+W)
 xscroll.config(command=canvas.xview)
 yscroll.config(command=canvas.yview)
 frame.pack(fill=BOTH,expand=1)

#function to be called when mouse is clicked
 def printcoords():
   File = filedialog.askopenfilename(parent=root, initialdir="C:/",title='Choose an image.')
   filename = ImageTk.PhotoImage(Image.open(File))
   canvas.image = filename # <--- keep reference of your image
   canvas.create_image(0,0,anchor='nw',image=filename)

Button(root,text='choose',command=printcoords).pack()
 root.mainloop()

来源：https://blog.csdn.net/YuMingJing_/article/details/79603579