Greek letters with .readline() and tkinter

[deanhystad]

The font used for printing to the console was set by your shell. It is not the font used by tk.

import tkinter as tk

root = tk.Tk()
label = tk.Label(root)
entry = tk.Entry(root)
print("Label font", label["font"])
print("Entry font", label["font"])

Output:
Label font TkDefaultFont
Entry font TkTextFont

My guess is neither TkDefaultFont nor TkTextFont contain the characters you need. Look for fonts on your computer and find a font that does. Then set that as the font for your text widgets.

import tkinter as tk

root = tk.Tk()
label = tk.Label(root, font=("Times",))
entry = tk.Entry(root, font=("Helvetica",))
print("Label font", label["font"])
print("Entry font", entry["font"])

Output:
Label font Times
Entry font Helvetica