Python tkinter for GUI programs radiobutton managing

Key attributes about Radiobutton
Collecting and Setting the values of Radiobutton
Events of radiobutton
How to set a default value ( select or unselect ) to a radiobutton
Resetting all Radiobuttons
Methods of radio buttons
Enable or disable radio buttons
Radiobuttons with bitmap
Developing SQL using Radiobuttons
Understanding the Indicatoron Attribute
Questions

Radio buttons are used when options are mutually exclusive and user can't select more than one chice.
Displaying three radiobuttons.
Three Radio buttons

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("300x120")  # Size of the window 

r1_v = tk.IntVar()

r1 = tk.Radiobutton(my_w, text='Passed', variable=r1_v, value=1)
r1.grid(row=1,column=1,padx=30,pady=30) 

r2 = tk.Radiobutton(my_w, text='Failed', variable=r1_v, value=0)
r2.grid(row=1,column=2) 

r3 = tk.Radiobutton(my_w, text='Appearing', variable=r1_v, value=5)
r3.grid(row=1,column=3) 

my_w.mainloop()  # Keep the window open

Managing Radio buttons in Tkinter GUI by setting and reading selected values with options to disable

Key attributes about Radiobutton 🔝

In above code we have linked the variable IntVar() r1_v to the radiobutton. This variable is common to all three radio buttons. ( In case of Checkbuttons the associated variables are different).

The value option is different for all the three radio buttons. This value will be associated to variable r1_v once the radio button is selected.

At any point of time maximum one radio button can be selected. ( We can select more than one Checkbuttons )

Collecting and Setting the values of Radiobutton 🔝

How to read the status ( value of the associated variable ) of the radio button.

my_val=r1_v1.get() #r1_v1 is the variable connected to radiobutton

How to set the value of the radiobutton ( to select or Unselect )?

r1_v1.set(1)

We will use the above concepts. Note that radiobutton can have values 1 or 0 or any other integer( integer variable ), Yes or No or any other string ( string variable) , True or False ( Boolean variable ). We will learn all three types here.

Events of radiobutton 🔝

Capturing click event of checkbox and display the value of the variable

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("500x500")  # Size of the window 

def my_upd():
    print('Radiobutton value :',r1_v.get())

r1_v = tk.IntVar() # We used integer variable here 

r1 = tk.Radiobutton(my_w, text='Passed', variable=r1_v, value=1,command=my_upd)
r1.grid(row=1,column=1) 

r2 = tk.Radiobutton(my_w, text='Failed', variable=r1_v, value=0,command=my_upd)
r2.grid(row=1,column=2) 

r3 = tk.Radiobutton(my_w, text='Appearing', variable=r1_v, value=5,command=my_upd )
r3.grid(row=1,column=3) 

my_w.mainloop()  # Keep the window open

Capturing click event of Radiobutton and display the string variable

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("500x500")  # Size of the window 

def my_upd():
    print('Radiobutton  value :',r1_v.get())

r1_v = tk.StringVar()  # We used string variable here
r1_v.set('Passed')     # Can assign value Appear or Failed

r1 = tk.Radiobutton(my_w, text='Passed', variable=r1_v, value='Passed',command=my_upd)
r1.grid(row=1,column=1) 

r2 = tk.Radiobutton(my_w, text='Failed', variable=r1_v, value='Failed',command=my_upd)
r2.grid(row=1,column=2) 

r3 = tk.Radiobutton(my_w, text='Appearing', variable=r1_v, value='Appear',command=my_upd )
r3.grid(row=1,column=3) 

my_w.mainloop()  # Keep the window open

Now let us use one Boolean variable

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("500x500")  # Size of the window 

def my_upd():
    print('Radiobutton  value :',r1_v.get())

r1_v = tk.BooleanVar()   # We assigned Boolean variable here
r1_v.set(True) # Can assign False 

r1 = tk.Radiobutton(my_w, text='Passed', variable=r1_v, value=True,command=my_upd)
r1.grid(row=1,column=1) 

r2 = tk.Radiobutton(my_w, text='Failed', variable=r1_v, value=False,command=my_upd)
r2.grid(row=1,column=2) 

my_w.mainloop()  # Keep the window open

How to set a default value ( select or deselect ) to a radiobutton 🔝

Check the code written above (for click event of Radiobutton and display the string variable) , we used one line to set the value of variable r1_v like this.

r1_v.set('Passed') # Can assign value Appear or Failed

We can change above code to set the radio button to a different selection.

Resetting all Radiobuttons 🔝

We can remove all user selections by assigning the variable to None. Here we have used r1_v as variable option of the radiobuttons.

r1_v.set(None)

How Reset button is used to delete all user enterd data and selections

Using all above knowledge let us try to make second group of radio buttons check or uncheck based on updating of first group of radiobuttons. Here we need to read the data of first radiobutton and then copy the same to second radiobutton.
Radio button copy and set value

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("500x500")  # Size of the window 

def my_upd():
    r2_v.set(r1_v.get())  # read from first group and set the second group
    print('Radiobutton  value :',r1_v.get())

r1_v = tk.StringVar()
r1_v.set('Passed') # (default value ) Can assign value Appear or Failed

r1 = tk.Radiobutton(my_w, text='Passed', variable=r1_v, value='Passed',command=my_upd)
r1.grid(row=1,column=1) 

r2 = tk.Radiobutton(my_w, text='Failed', variable=r1_v, value='Failed',command=my_upd)
r2.grid(row=1,column=2) 

r3 = tk.Radiobutton(my_w, text='Appearing', variable=r1_v, value='Appear',command=my_upd )
r3.grid(row=1,column=3) 


r2_v = tk.StringVar()
r2_v.set('Passed') # default value

r4 = tk.Radiobutton(my_w, text='Passed', variable=r2_v, value='Passed',command=my_upd)
r4.grid(row=2,column=1) 

r5 = tk.Radiobutton(my_w, text='Failed', variable=r2_v, value='Failed',command=my_upd)
r5.grid(row=2,column=2) 

r6 = tk.Radiobutton(my_w, text='Appearing', variable=r2_v, value='Appear',command=my_upd )
r6.grid(row=2,column=3) 

my_w.mainloop()

Methods of Radiobuttons 🔝

deselect() : DeSelect or off the radio button
flash() : flash the radio button but leave it in its original state.
invoke() : Select the radio button and call the function.
select() : Select the radio button.

Radio button methods

Here is an example where each button is connected to one method of our first Radio button r1.

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("400x250")  # Size of the window 
my_w.title("www.plus2net.com") # Window title
font1=['Arial',15,'normal'] # Font type,size, style 

def my_upd():
    print('Radiobutton value :',r1_v.get())

r1_v=tk.StringVar(value='MySQL')

r1=tk.Radiobutton(my_w,text='PHP',variable=r1_v,value='PHP',command=my_upd,font=font1)
r1.grid(row=1,column=1,padx=20,pady=30)

r2=tk.Radiobutton(my_w,text='MySQL',variable=r1_v,value='MySQL',command=my_upd)
r2.grid(row=1,column=2,padx=20,pady=30)

r3=tk.Radiobutton(my_w,text='Python',variable=r1_v,value='Python',command=my_upd)
r3.grid(row=1,column=3,padx=20,pady=30)

bt1=tk.Button(my_w,text='select()',command=lambda:r1.select())
bt1.grid(row=2,column=1)

bt2=tk.Button(my_w,text='deselect()',command=lambda:r1.deselect())
bt2.grid(row=2,column=2)

bt3=tk.Button(my_w,text='flash()',command=lambda:r1.flash())
bt3.grid(row=2,column=3)

bt4=tk.Button(my_w,text='invoke()',command=lambda:r1.invoke())
bt4.grid(row=2,column=4)

my_w.mainloop()  # Keep the window open

Enable or disable radio buttons 🔝

The option state can take three values : normal, disabled , active. We can use config to set the option also.

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("300x150")  # Size of the window 

r1_v = tk.IntVar()

r1 = tk.Radiobutton(my_w, text='Passed', variable=r1_v, value=1)
r1.grid(row=1,column=1,padx=25,pady=25) 

r2 = tk.Radiobutton(my_w, text='Failed', variable=r1_v, value=0)
r2.grid(row=1,column=2) 

r3 = tk.Radiobutton(my_w, text='Appearing', variable=r1_v,
       value=5, state='disabled')
r3.grid(row=1,column=3) 
r2.config(state='disabled') # active , normal , disabled

my_w.mainloop()  # Keep the window open

Radiobuttons with bitmap 🔝

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("200x150")  # Size of the window 

r1_v = tk.IntVar()

r1 = tk.Radiobutton(my_w, bitmap='info', variable=r1_v, value=1)
r1.grid(row=1,column=1,padx=15) 

r2 = tk.Radiobutton(my_w, bitmap='question', variable=r1_v, value=2)
r2.grid(row=1,column=2,padx=15,pady=40) 

r3 = tk.Radiobutton(my_w, bitmap='warning', variable=r1_v,value=3)
r3.grid(row=1,column=3) 
my_w.mainloop()  # Keep the window open

Developing SQL using Radiobuttons 🔝

Generate query using selection of Radio buttons

import datetime
today = datetime.datetime.now() # creating date object 
year=today.year # Present Year as Integer 

year1 = today.year+1 #Next Year 
year2= today.year-1  #Previous Year 

import tkinter as tk
my_w = tk.Tk()
my_w.geometry("400x200")  # Size of the window 

r1_v = tk.IntVar(value=year) # declaring Intvar 

r1 = tk.Radiobutton(my_w, text=year2, variable=r1_v, value=year2)
r1.grid(row=0,column=0,padx=10,pady=30) 

r2 = tk.Radiobutton(my_w, text=year, variable=r1_v, value=year)
r2.grid(row=0,column=1,padx=5) 

r3 = tk.Radiobutton(my_w, text=year1, variable=r1_v, value=year1)
r3.grid(row=0,column=2,padx=5) 

lb=tk.Label(my_w,text='Query',bg='yellow',width=50)
lb.grid(row=1,column=0,columnspan=3,padx=5)

def my_upd(*args): # on click of radio buttons 
    query="SELECT * FROM my_tasks \
    WHERE strftime('%Y',dt)='"+str(r1_v.get())+"'"
    print(query)    
    lb.config(text=query)

r1_v.trace('w',my_upd)
my_w.mainloop()

Tkinter Radiobuttons to select current next and previous years and to generate SQL query

Difference between checkbox and radio buttons in our Checkbutton tutorial

Understanding the Indicatoron Attribute 🔝

Use the indicatoron attribute in Tkinter Radiobuttons to toggle between traditional radio buttons and pushbutton style.
indicatoron can be 0 or 1 ( True or False ), default value is True.

import tkinter as tk

my_w = tk.Tk()
my_w.geometry("500x150")  # Size of the window 

def selected():
    print("Selected value:", my_var.get())

my_w.title("Radiobutton Customization")
my_font=['Arial',18,'normal']
# Variable to hold the selected Radiobutton's value
my_var = tk.IntVar()

# List of options
options = [("PHP ", 1), ("Python ", 2), ("JSP ", 3)]
i=0
for (text, value) in options:
    rd1=tk.Radiobutton(my_w, text=text, variable=my_var, value=value,
                   command=selected, fg="blue", bg="light gray",font=my_font,
                   selectcolor="yellow", activebackground="light blue",
                   activeforeground="yellow", indicatoron=0, width=10,
                   compound="left")
    rd1.grid(row=0,column=i,pady=30 ,padx=8)
    i=i+1

my_w.mainloop()

Food Menu system using Checkbutton indicatoron attribute

Dynamically Creating Radio Buttons Based on Data

In the example above, the options list contains three elements. Radio buttons are dynamically created based on the elements in this list. In scenarios where the number of radio buttons depends on variable data, such as information retrieved from a database, this approach becomes especially useful. By dynamically generating radio buttons, you can ensure that the number of buttons matches the available data while maintaining full functionality.

Exercise on radiobutton
Create one columns of radio buttons representing languages and second column showing same languages with checkboxes. By Selecting the radio button the matching checkbox should select ( check ) , your change in selection of radio buttons should deselect previous one and check the new one

Example : If you select PHP Radio button then PHP checkbox should select. If you change your selection to Python then Python checkbox should select and at the same time PHP should deselect.

Solution

Questions 🔝

What is Tkinter's Radiobutton widget used for?
How do you create a Radiobutton in Tkinter?
Explain the basic syntax to create a Radiobutton widget in a Tkinter application, mentioning any required parameters.
What is the significance of the variable option in a Tkinter Radiobutton?
Discuss how the variable option is used to associate a Python variable with a group of Radiobuttons.
How do you group Radiobuttons in Tkinter?
Describe the method to group multiple Radiobuttons together, so selecting one option automatically deselects the others in the group.
Can you explain how to retrieve the value of a selected Radiobutton in Tkinter?
Provide an example to demonstrate retrieving the value from a selected Radiobutton using a Python variable.
What is the purpose of the value option in a Tkinter Radiobutton?
Explain how the value option is utilized to assign a unique identifier to each Radiobutton in a group.
How do you change the appearance of Radiobuttons in Tkinter?
Discuss the options available to customize the appearance of Radiobuttons, such as changing the color, size, or adding a text label.
How does the command option work in Tkinter Radiobuttons?
Explain the use of the command option to execute a function whenever a Radiobutton is selected.

Python Tkinter Dictionary Python- Tutorials

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	14-03-2024
Hi, my radio buttons using customtkinter work just debbuging into VSCODE, but when I use pyinstaller for .exe they not show, i print the error in messagebox and the error is just 'CTkRadiobutton'

Python tkinter Radiobutton