Can't change button font size in tkinter

Question

I can't seem to change the size of my font in tkinter! No matter which size I choose, the button text displays the same. If I deleted the whole stlye line, it's displayed smaller.

Similarly, the font always looks the same, no matter what I choose.

I want to finetune the size and the font, can you please help me=?

import tkinter
import tkinter.ttk as ttk
from tkinter import font

root = tkinter.Tk()

frame = ttk.Frame(root)
frame.grid(column=0, row=0)

style = ttk.Style(root)

ttk.Button(frame, text="Open file", command=None).grid(column=0, row=1)

ttk.Style().configure("TButton", font=font.Font(family='wasy10', size=80)) #I can choose any value here instead of "80" and any font like "Helvetica" - nothing will change

root.mainloop()

Answer 1

You do not need to import font. ttk style has its own font argument. Just put the style in the first option and the font size in the 2nd option.

I would also use the variable name to edit the style. Instead of calling:

ttk.Style().configure()

Do this:

style.configure()

Take a look at the below.

import tkinter
import tkinter.ttk as ttk


root = tkinter.Tk()

frame = ttk.Frame(root)
frame.grid(column=0, row=0)

style = ttk.Style(root)
style.configure("TButton", font=('wasy10', 80))

ttk.Button(frame, text="Open file", command=None, style="TButton").grid(column=0, row=1)


root.mainloop()

On the advice of Bryan Oakley in the comments here is a 2nd option that is close to what you are trying to do with fort.

This option saves a referent to the font object and then uses it to update the style.

import tkinter
import tkinter.ttk as ttk
from tkinter import font


root = tkinter.Tk()

frame = ttk.Frame(root)
frame.grid(column=0, row=0)

style = ttk.Style(root)
font = font.Font(family="wasy10", size=80)
style.configure("TButton", font=font)

ttk.Button(frame, text="Open file", command=None, style="TButton").grid(column=0, row=1)

root.mainloop()