set label text size tkinter
pythonCopyimport tkinter as tk
import tkinter.font as tkFont
app = tk.Tk()
fontStyle = tkFont.Font(family="Lucida Grande", size=20)
labelExample = tk.Label(app, text="20", font=fontStyle)
def increase_label_font():
fontsize = fontStyle['size']
labelExample['text'] = fontsize+2
fontStyle.configure(size=fontsize+2)
def decrease_label_font():
fontsize = fontStyle['size']
labelExample['text'] = fontsize-2
fontStyle.configure(size=fontsize-2)
buttonExample1 = tk.Button(app, text="Increase", width=30,
command=increase_label_font)
buttonExample2 = tk.Button(app, text="Decrease", width=30,
command=decrease_label_font)
buttonExample1.pack(side=tk.LEFT)
buttonExample2.pack(side=tk.LEFT)
labelExample.pack(side=tk.RIGHT)
app.mainloop()
