Tkinter Radiobutton Groups

Tkinter Radiobutton Groups

To create different groups of Radiobutton widgets in Tkinter, give a specific variable for each group. When user selects an option in one group, the selection in the other group is not affected.

Tkinter Radiobutton Groups
Two Radiobutton Groups

In this tutorial, you will learn how to create two groups of Radiobutton widgets, in a Tk window, with example program.

Example

In this example, we shall create two groups of Radiobutton widget in a Tk window, where there are three options in the first group, and only two options in the second group. We specify a variable group_1_var to the radio buttons in the Group 1, and a variable group_2_var to the radio buttons in the Group 2.

Program

import tkinter as tk

def on_select():
    selected_option = radio_var.get()
    print(f"Selected option: {selected_option}")

# Create the main window
window = tk.Tk()
window.geometry("300x200")
window.title("PythonExamples.org")

# Group 1
group_1_label = tk.Label(window, text="Group 1")
group_1_label.pack()

group_1_var = tk.StringVar()

def group_1_select():
    selected_option = group_1_var.get()
    print(f"Selected option in Group 1 : {selected_option}")

radio_button_1_1 = tk.Radiobutton(window, text="Option 1", variable=group_1_var, value="Option 1",
                                command=group_1_select)
radio_button_1_2 = tk.Radiobutton(window, text="Option 2", variable=group_1_var, value="Option 2",
                                command=group_1_select)
radio_button_1_3 = tk.Radiobutton(window, text="Option 3", variable=group_1_var, value="Option 3",
                                command=group_1_select)

radio_button_1_1.pack()
radio_button_1_2.pack()
radio_button_1_3.pack()

# Group 2
group_2_label = tk.Label(window, text="Group 2")
group_2_label.pack()

group_2_var = tk.StringVar()

def group_2_select():
    selected_option = group_2_var.get()
    print(f"Selected option in Group 2 : {selected_option}")

radio_button_2_1 = tk.Radiobutton(window, text="Option A", variable=group_2_var, value="Option 1",
                                command=group_2_select)
radio_button_2_2 = tk.Radiobutton(window, text="Option B", variable=group_2_var, value="Option 2",
                                command=group_2_select)

radio_button_2_1.pack()
radio_button_2_2.pack()

# Start the Tkinter event loop
window.mainloop()

Output

Output on MacOS

Tkinter Radiobutton Groups - Example
Tkinter window with two Radiobutton Groups

User selects "Option 3" from Group 1 and "Option B" from Group 2.

Tkinter Radiobutton Groups - With selected option in each of the group
Option 3 selected from Group 1, and Option B selected from Group 2

The respective command functions execute, and prints the selected options in the standard output.

Terminal output when user selects an option in the Radiobutton group

Summary

In this Python Tkinter tutorial, we learned how to create Radiobutton groups and handle the option selection, with examples.

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