here of radiobuttons checked when program starts. however, want none of them checked @ first, user can choose 1 of them:
from tkinter import * root = tk() var = stringvar() l = label(root) l.pack() def f(): l.config(text=var.get()) rb1 = radiobutton(root, text="first", variable=var, value='a', command=f) rb1.pack() rb2 = radiobutton(root, text="second", variable=var, value='b', command=f) rb2.pack() but not same intvar:
from tkinter import * root = tk() var = intvar() l = label(root) l.pack() def f(): l.config(text=var.get()) rb1 = radiobutton(root, text="first", variable=var, value=1, command=f) rb1.pack() rb2 = radiobutton(root, text="second", variable=var, value=2, command=f) rb2.pack() when run program works way want -- none of radiobuttons checked program starts , decide choose 1 of them.
but when variable stringvar, doesn't work out. want figure out why doesn't. i've looked solution in few sources, couldn't find helpful. decided ask here. appreciated!
you should able set radiobutton ' ' == "empty var" none selected, makes no sense mentioned @bryan oakley.
im not usre i'm within best practices adding values list creating radiobuttons, should allow have unselected radiobuttons
from tkinter import * root = tk() def f(): l.config(text=var.get()) var = stringvar() var.set(' ') #even without none value, allow empty radiobuttons on init. not recommended values = ['none', 'a', 'b'] l = label(root, width=20) l.pack() vset in values: rb = radiobutton(root, text="first", variable=var, value=vset, command=f) rb.pack() root.mainloop() 