python - Displaying square Tkinter.Button's?

Question

Why does this code display buttons taller than they are wide?

import Tkinter, tkFont
top = Tkinter.Tk()
right = Tkinter.Frame(top)
right.pack(side = "right")
font = tkFont.Font(family="Helvetica", size=60, weight = tkFont.BOLD)

for i in xrange(6):
    b = Tkinter.Button(right, text = str(i), font = font, width = 1, height = 1)
    top.rowconfigure(i, weight = 1)
    top.columnconfigure(i, weight = 1)
    b.grid(row = i/3, column = i%3, sticky = "NWSE")

top.mainloop()

• All the buttons are created with width=1, height=1
• For every row and every column of right there is a call to right.rowconfigure(rowi, weight=1) (or to columnconfigure).
• Every grid placement of every button b is made with sticky NSEW.
• I have set right.grid_propagate(0)

What exactly am I doing wrong?

If I put the buttons directly onto top, the buttons just become wider than tall. It seems that they are being resized to accomodate propagated space. How do I prevent this resizing?

Answer 1

If a Button displays text, when you use height and width options, their units in text unit. To make them square, using pixel unit would be better. To do that, you need to place that button in a Frame and make sure frame won't propagate(grid_propagate) and allow its children to fill it (columnconfigure & rowconfigure).

This is just an example, since I don't see your code.

import Tkinter as tk

master = tk.Tk()

frame = tk.Frame(master, width=40, height=40) #their units in pixels
button1 = tk.Button(frame, text="btn")


frame.grid_propagate(False) #disables resizing of frame
frame.columnconfigure(0, weight=1) #enables button to fill frame
frame.rowconfigure(0,weight=1) #any positive number would do the trick

frame.grid(row=0, column=1) #put frame where the button should be
button1.grid(sticky="wens") #makes the button expand

tk.mainloop()

EDIT: I just saw your edit(adding your code). After applying same things to your code;

import Tkinter, tkFont
top = Tkinter.Tk()
right = Tkinter.Frame(top)
right.pack(side = "right")
font = tkFont.Font(family="Helvetica", size=20, weight = tkFont.BOLD)

for i in xrange(6):
    f = Tkinter.Frame(right,width=50,height=50)
    b = Tkinter.Button(f, text = str(i), font = font)

    f.rowconfigure(0, weight = 1)
    f.columnconfigure(0, weight = 1)
    f.grid_propagate(0)

    f.grid(row = i/3, column = i%3)
    b.grid(sticky = "NWSE")

top.mainloop()