尝试将PNG图像添加到tkinter窗口时，图像未识别错误

Question

I'm trying to add images to a tkinter window, and I keep getting the error:

_tkinter.TclError: couldn't recognize data in image file 'Sun.png'

I have tried many different ways of adding images to tkinter windows, mostly as question answers from this site and they all give the same error, the code I'm currently using is the simplest version I could find and is as follows:

from tkinter import *

root = Tk()

photo = PhotoImage(file='Sun.png')
label = Label(root, image=photo)
label.pack()

root.mainloop()

Im using a mac and running the code in IDLE using python3, after trying for a few hours I've run out of ideas for how this can be fixed so sorry if it's obvious.

Answer 1

Your tkinter version must not support .png file type for images. Try your program with another file type which your tkinter supports.

Answer 2

Ok, I've figured it out, I needed to use PIL to open the image and then assign it to a canvas, then pack the canvas to the root, the code I've ended up with is this:

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

root=Tk()
root.geometry('480x360')

cond = 'Sun'

image = Image.open(str(cond) + '.png')
canvas=Canvas(root, height=200, width=200)
basewidth = 150
wpercent = (basewidth / float(image.size[0]))
hsize = int((float(image.size[1]) * float(wpercent)))
image = image.resize((basewidth, hsize), PIL.Image.ANTIALIAS)
photo = ImageTk.PhotoImage(image)
item4 = canvas.create_image(80, 80, image=photo)
canvas.pack(side = TOP, expand=True, fill=BOTH)

root.mainloop()

This code achieves the needed effect of displaying a photo in a Tkinter window and also resizing that image.