Python Tkinter RadioButton

In this tutorial, we will learn about Python Tkinter RadioButton. Tkinter RadioButton is used to show multiple options to the user from these options user can select only one option. We can associate a different method with each RadioButton. Furthermore, we can show multiple lines or images with RadioButtons.

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It is important to note, to add proper functionality in RadioButtons each RadioButton must be associated with a single variable. Each RadioButton must symbolize with a single value for that particular variable.

Syntax of Python Tkinter RadioButton:

w = Radiobutton (master, options)

master: This represents the parent window.
options: Here is the list of most commonly used options for this widget.

Example of Python Tkinter RadioButton:

# importing tkinter lib
from tkinter import *  

l= ["C", "Java", "Python"]

def choice():  
    selection = "You have chosen : " + l[radio.get()]  
    message.config(text = selection)  
    
mainWindow = Tk()  

mainWindow.geometry("320x150")

radio = IntVar()  

lb = Label(text = "Please choose one programming language:", pady=15 )  
lb.pack()  

c = Radiobutton(mainWindow, text="C", variable=radio, value=0,  
                  command=choice)  
c.pack( anchor = W )  
  
java = Radiobutton(mainWindow, text="Java", variable=radio, value=1,  
                  command=choice)  
java.pack( anchor = W) 

python = Radiobutton(mainWindow, text="Python", variable=radio, value=2,  
                  command=choice)  
python.pack( anchor = W) 
  
message = Label(mainWindow)  
message.pack()   

mainWindow.mainloop()

Various possible options in Python Tkinter RadioButton:

Option	Description
activebackground	This option is used to set background color of widget under focus.
activeforeground	This option is used to set foreground color of widget under focus.
anchor	This option helps us to set position of text inside the widget. By default value of anchor is CENTER.
bg	This option helps us to set normal background color of widget.
bitmap	This option helps us to display an image. You just have to set this option equal to an image object.
borderwidth	This option is used to set the width of border.
command	This option helps us to mention a function to every time when RadioButton will change its state.
cursor	This option helps us to set the style of cursor like an arrow, dot etc
font	This option is used to set font type in widget.
fg	This option helps us to set normal foreground colour of widget.
height	This option helps us to set height of widget.
highlightcolor	This option is used to set highlight color shown to the widget under focus.
highlightbackground	This option is used to set color of the focus highlight when the widget is not having the focus.
image	This option helps us to show image with radio button instead of text.
justify	This helps us to automatically organize the text in multiple lines.
padx	This option helps us to set space left and right between text and RadioButton.
pady	This option helps us to set space above and below.
relief	This helps us to set the style of the border by which is default Flat.
selectcolor	This option used to set color of text when radio button will selected state.
selectimage	This option used to display image when radio button will selected state.
state	This option is use to set state or RadioButton. By default it is NORMAL. You can also set it DISABLE.
text	This option helps us to set string source for label.
textvariable	This option is use to mention text source(variable.)
underline	This option helps us to underline specified letter of the text.
value	This option is used to set value of each RadioButton.
variable	This option is used to set variable in RadioButton.
width	This helps us to set the width of the widget.
wraplength	This option is used to wrap text into number of lines.