tkinter: fill = Y has no effect

Question

from tkinter import *

root = Tk()
root.title('My app')
root.minsize(250, 100)
label1 = Label(root, text = 'Hello world!', fg = 'red', bg = 'yellow',
               font = 'Monaco')
label1.pack(fill = X)
label2 = Label(root, text = 'Some more text!', fg = 'green', bg = 'cyan',
               font = 'Arial')
label2.pack(fill = Y)
root.mainloop()

When I run the code, label1 stretches perfectly along the X axis while label2 doesn't stretch at all along the Y axis. What am I missing?

Result

Bryan Oakley · Accepted Answer · 2019-03-15T16:06:56.200

5

It is filling the space allocated for it. Tkinter will try to allocate the smallest amount of space necessary for the widget.

If you want tkinter to expand the widget to fill all remaining space, you need to set the expand attribute to True.

label2.pack(fill = Y, expand=True)

edited Mar 15 '19 at 16:06

answered Aug 04 '17 at 22:15

Bryan Oakley

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This, however, does not work with Button. Is there a deliberate layout difference between Buttons and Labels there? – kakyo Aug 07 '17 at 09:38
1

@kakyo: are you using OSX? Buttons are a bit less configurable on that platform. – Bryan Oakley Aug 07 '17 at 11:55
@kakyo Button inside frame? it can be a reason – 1UC1F3R616 Mar 15 '19 at 15:10
@BryanOakley can you expand on your comment, and perhaps provide a link to more info? – Josh K Aug 14 '23 at 21:58

tkinter: fill = Y has no effect

1 Answers1