Python Tkinter Button: Tutorial for Beginners

   October 18, 2022

In this tutorial, we will explore everything about how to create a Tkinter Button in python, everything will be beginner friendly. Tkinter is one of the simplest GUI libraries among all the GUI libraries supported by Python. Tkinter is Python’s de facto standard GUI means this is the official GUI library for Python which is not official by the owners of Python.

Tkinter Button in Python

Creating a simple tkinter button

We can use Button() to create a button in Python using tkinter.

b = Button(top, text="I am a Tkinter Button")
from tkinter import *
top = Tk()
top.geometry("250x100")
top.title('Button in Tkinter')
b = Button(top, text="I am a Tkinter Button")
b.place(x=60, y=50)
top.mainloop()
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Output:

output of simple tkinter button in python

Adding function to the button

With the command option of Button(), we can call a function using a tkinter button in Python. To call a function, we just need to write the function name:

def fun():
    print('Tkinter Button clicked!')

b = Button(top, text="I am a Tkinter Button", command=fun)
from tkinter import *
top = Tk()
top.geometry("250x150")
top.title('Button in Tkinter')
def fun():
    print('Tkinter Button clicked!')
b = Button(top, text="I am a Tkinter Button", command=fun)
b.place(x=60, y=50)
top.mainloop()
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Output:

Video Player

Showing a message

To show a message in tkinter, we need to import messagebox from tkinter.

from tkinter import messagebox

To show message using messagebox, we need to use showinfo().

messagebox.showinfo("Title of MessageBox", "Message")
from tkinter import *
from tkinter import messagebox
top = Tk()
top.geometry("250x150")
top.title('Button in Tkinter')
def fun():
    messagebox.showinfo("MessageBox", "Button clicked")
b = Button(top, text="Show Message", command=fun)
b.place(x=80, y=50)
top.mainloop()
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Output:

Video Player

Giving padding

To give padding in buttons in tkinter, we should use padx(for x direction) and pady(for y direction).

b = Button(top, padx=10, pady=15)
from tkinter import *
top = Tk()
top.geometry("250x100")
top.title('Button in Tkinter')
b = Button(top, text="I am a Tkinter Button", padx=10, pady=15)
b.place(x=60, y=20)
top.mainloop()
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Output:

giving padding

Color customization

Tkinter in Python offers many color customization options to make tkinter buttons beautiful. For example, bg to change the background, fg to change text color, activebackground to change the background on click of a button, and activeforeground to change text color on click of a button.

b = Button(top, text="Button", bg='gray', fg='green', activebackground='Red', activeforeground='white')
from tkinter import *
top = Tk()
top.geometry("250x100")
top.title('Button in Tkinter')
b = Button(top, text="I am a Tkinter Button", bg='gray', fg='green', activebackground='Red', activeforeground='white')
b.place(x=60, y=50)
top.mainloop()
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Output:

Video Player

Width and Height of tkinter buttons

We can change the width of the border of a tkinter button.

b = Button(top, text="I am a Tkinter Button", bd=5)

We can also change the width and height of a button in Python tkinter.

b = Button(top, text="I am a Tkinter Button", width=20, height=4)
from tkinter import *
top = Tk()
top.geometry("270x150")
top.title('Button in Tkinter')
b = Button(top, text="I am a Tkinter Button", bd=5, width=20, height=4)
b.place(x=55, y=50)
top.mainloop()
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Output:

border width and button width and height

Using image as a button

We can use an image as a button, we need to use PhotoImage from tkinter.ttk. Then we can import an image in our program which we can use in our button.

from tkinter.ttk import *
photo = PhotoImage(file="path_to_image")
b = Button(top, image=photo)
from tkinter import *
from tkinter.ttk import *
top = Tk()
top.geometry("270x150")
top.title('Button in Tkinter')
photo = PhotoImage(file="path_to_image")
b = Button(top, image=photo)
b.place(x=55, y=50)
top.mainloop()
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Output:

image as button
Video Player

Font in tkinter button

We can also customize a button in the tkinter. For that, we need to import font from tkinter.font. Then, we can use Font() from font. After giving all values to font(), we can use it inside our button. We can set font family, size, weight, underline, etc of the font.

import tkinter.font as font
myFont = font.Font(family='Helvetica', size=9, weight='bold', underline=True)
b = Button(top, text="Customizing fonts in Tkinter Button", font=myFont)
from tkinter import *
import tkinter.font as font
top = Tk()
myFont = font.Font(family='Helvetica', size=9, weight='bold', underline=True)
top.geometry("270x150")
top.title('Button in Tkinter')
b = Button(top, text="Customizing fonts in Tkinter Button", font=myFont)
b.place(x=70, y=50)
top.mainloop()
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Output:

font in tkinter buttons

State of a button in tkinter

By default, a tkinter button is active, we can disable it using the state option of Button().

b2 = Button(top, text="Disabled Tkinter Button", state=DISABLED)
from tkinter import *
top = Tk()
top.geometry("270x150")
top.title('Button in Tkinter')
b1 = Button(top, text="Active Tkinter Button")
b2 = Button(top, text="Disabled Tkinter Button", state=DISABLED)
b1.place(x=78, y=35)
b2.place(x=70, y=70)
top.mainloop()
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Output:

Video Player
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