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

Radio buttons are used when options are mutually exclusive, user has to select one of the many available choices. In case of checkbuttons user can select more than one choice.
We will use Radio buttons value option to assign the choice once the button is selected. To hold the selected option we will use one StringVar ( string variable ) and any time we can display the value of the string variable to know which button is selected.

As we are using string variables so we can use the set() method to assign a default value to it and the same radio button will remain in selected condition.
Any time we can use the get() method of string variable to know the user selected radio button value
We can use command option to trigger any function where we can collect the selected value. On click of any radio button this function will execute. Inside the function we can execute code to read the selected option value or use config() to change any option value. We can read and display the value by using one Label in our Tkinter window.
We can enable or disable the radio button by using the state option. This state option takes three values, enable disable and active.
#tkinter #tkinterradiobutton #StringVar #radiobuttonoptions #changeevent #commandOption #tkinterGUI #plus2net

[sciencebia]

When i made my program and inserted the radio button, i made 2 options and both the options were shown filled by default till the user selects any option

So how to fix this

I want to show my options unfilled by default till users select some option

[chintalagreeshma]

Where we have to perform all this any app is there

[mohammedinask]

how to check if the user selected a radiobutton or not