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How can I display an image in Python 3 using tkinter / ttk?

Right question: what am I doing wrong in the following code fragment?

    from tkinter import *
    from tkinter.ttk import *

    root = Tk()

    myButton = Button(root)
    myImage = PhotoImage(myButton, file='myPicture.gif')
    myButton.image = myImage
    myButton.configure(image=myImage)

    root.mainloop()

The error message I get from idle3 is as follows:

    >>> 
    Traceback (most recent call last):
      File "/home/bob/Documents/Python/tkImageTest.py", line 9, in <module>
        myButton.configure(image=myImage)
      File "/usr/lib/python3.2/tkinter/__init__.py", line 1196, in configure
        return self._configure('configure', cnf, kw)
      File "/usr/lib/python3.2/tkinter/__init__.py", line 1187, in _configure
        self.tk.call(_flatten((self._w, cmd)) + self._options(cnf))
    TypeError: __str__ returned non-string (type Button)
    >>>

This error message puzzled me, I just do not understand what he is trying to say. Any ideas?

I am also grateful for the suggestions for changes ...

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2 answers

The error seems to indicate the argument myButtonpassed in PhotoImage. As you noted in your comment, I PhotoImageprocessed the widget object as a string (there are several variations of the type string, see the List of PhotoImage parameters here ).

, myButton:

myImage = PhotoImage(file='myPicture.gif')

, PhotoImage. PhotoImage, (, ) . :

PhotoImage tkinter:

class PhotoImage ()

| Widget which can display colored images in GIF, PPM/PGM format.
|    
|  Method resolution order:  
|      PhotoImage  
|      Image  
|      builtins.object  
|    
|  Methods defined here:
|    
|  __getitem__(self, key)  
|      # XXX config  
|    
|  __init__(self, name=None, cnf={}, master=None, **kw)  
|      Create an image with NAME.
|
|      Valid resource names: data, format, file, gamma, height, palette, 
|      width.

FYI: Python IDLE:

from tkinter import PhotoImage
help(PhotoImage)

, , http://tkinter.unpythonic.net/wiki/PhotoImage.

+7

python 2.7.9, 3.2.5, 3.3.5, 3.4.3 32 64 . (Win 8.1 64bit)

.

( python 3.4.3 64bit .

3.4.3, .

3.4.3 64-)

# basic code from >>
# http://tkinter.unpythonic.net/wiki/PhotoImage

# extra code -------------------------------------------------------------------------
from __future__ import print_function

try:
    import tkinter as tk
except:
    import Tkinter as tk

import sys
import platform

print ()
print ('python    ', sys.version)
print ('tkinter   ', tk.TkVersion)
print ()
print (platform.platform(),' ',platform.machine())
print ()


# basic code -------------------------------------------------------------------------

root = tk.Tk()

def create_button_with_scoped_image():
    # "w6.gif" >>
    # http://www.inf-schule.de/content/software/gui/entwicklung_tkinter/bilder/w6.gif
    img = tk.PhotoImage(file="w6.gif")  # reference PhotoImage in local variable
    button = tk.Button(root, image=img)
    # button.img = img  # store a reference to the image as an attribute of the widget
    button.image = img  # store a reference to the image as an attribute of the widget
    button.grid()

create_button_with_scoped_image()

tk.mainloop()
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