Python button选取本地图片并显示的实例

from tkinter import *from tkinter import filedialogfrom PIL import Image, ImageTkif __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()