Answers for "what is the default font in tkinter"

python tkinter font

import tkinter
from tkinter.font import Font

root = tkinter.Tk()

font_1 = Font(family='Arial', 
              size=24, 
              weight='normal', 
              slant='italic', 
              underline=1, 
              overstrike=1)

font_2 = Font(family='Helvetica',
              size=12,
              weight='bold',
              slant='italic',
              underline=0,
              overstrike=0)

font_3 = Font(family='Courier', size=14, weight='normal', slant='roman', underline=0, overstrike=0)
font_4 = Font(family='Times', size=22, weight='bold', slant='roman', underline=0, overstrike=0)

my_label = tkinter.Label(master=root, text='Text', font=font_1)
my_label.pack()

tkinter.mainloop()

font in tkinter

import tkinter.font as TkFont

font = tkFont.Font ( option, ... )
# Exaple
helv36 = tkFont.Font(family="Helvetica",size=36,weight="bold")