Python-Tkinter, for-loop to create pictured button

Question

I'm still quiet new to programming, so maybe my question in pretty easy or even stupid. As said in the title I'm trying to programm a for loop, which creates a pictured button widget for each picuture in a certain folder. This is what I have so far:

import tkinter  
from tkinter import ttk
from tkinter import PhotoImage
import os

root = tkinter.Tk()

list_files = os.listdir(".")

for file in list_files:
    if file.endswith(".gif"):
        drink = PhotoImage(file)
        print(drink)
        b1 = ttk.Button(image=drink, text="Hello", compound="right").pack()
        l1 = ttk.Label(image=drink).pack()


root.mainloop()

Now what I get is two widgets, one label displaying nothing and a button displaying Hello. In the shell it says drink1.gif, which is correct, because that's the only gif file in my standard python folder...

what have I done wrong?

kalgasnik · Accepted Answer · 2013-04-21 15:20:22Z

3

Use PhotoImage(file='path_to_file') to create image from path.
When PhotoImage object is garbage-collected by Python, the label is cleared. You must save reference to drink object somewhere: l1.image = drink:
http://effbot.org/pyfaq/why-do-my-tkinter-images-not-appear.htm
widget.pack() method return nothing.

import tkinter  
from tkinter import ttk
from tkinter import PhotoImage
import os

root = tkinter.Tk()
list_files = os.listdir(".")
for path in list_files:
    if path.endswith(".gif"):
        drink = PhotoImage(file=path)
        b1 = ttk.Button(root, image=drink, text="Hello", compound="right")
        b1.pack()
        l1 = ttk.Label(root, image=drink)
        l1.image = drink
        l1.pack()

root.mainloop()

edited Apr 21, 2013 at 15:20

answered Apr 21, 2013 at 15:15

kalgasnik

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4 Comments

user2304540 Over a year ago

Perfectly working! Thank you! This panel is awesome!! is there a way to stick text with the picture and display it? something like a description? or should I just name the file by the text I want to be displayed? Is there a good explanation about garbage collection? I'm not sure whether I fully got it and I think it's rather important ;)

kalgasnik Over a year ago

I don't know common way to attach text to image. You can store description in text file: my_image.gif and my_image.txt.

kalgasnik Over a year ago

About garbage collection: if you load 5 images in loop (without saving references to them), only last image will be displayed.

user2304540 Over a year ago

Okay thank you I think I get it now! the idea with .txt is good aswell, thanks guys you were really helpful!!

Lee Daniel Crocker · Accepted Answer · 2013-04-21 15:00:15Z

2

PhotoImage(file) creates an image and gives it the name "drink1.gif", which is returned. If you actually want to load the file into the image, you need PhotoImage(file = file).

answered Apr 21, 2013 at 15:00

Lee Daniel Crocker

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Comments

kirbyfan64sos · Accepted Answer · 2013-04-21 14:55:38Z

0

I believe you are supposed to run self.pack, according to the Zetcode tutorial.

answered Apr 21, 2013 at 14:55

kirbyfan64sos

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1 Comment

user2304540 Over a year ago

Thank you, this tutorial was new to me

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