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?

Answer 1

1. Use PhotoImage(file='path_to_file') to create image from path.
2. 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
3. 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()

Answer 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).

Answer 3

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