How to dynamically change radiobutton text - Printable Version +- Python Forum (https://python-forum.io) +-- Forum: Python Coding (https://python-forum.io/forum-7.html) +--- Forum: GUI (https://python-forum.io/forum-10.html) +--- Thread: How to dynamically change radiobutton text (/thread-32774.html) |
How to dynamically change radiobutton text - kenwatts275 - Mar-04-2021 Hello everybody. I am trying to dynamically change the text of a radio button. Below is an example program. When you run it, when you click on the "Go" button, the text of the radiobutton is supposed to change. When I run it, I get the error "NoneType" object does not support item assignment. Any help would be appreciated. Thanks in advance, Ken from tkinter import * from tkinter import filedialog import tkinter.font as font def main_program(): btn['text']="Go pressed" print("Finished\n") mw = Tk() mw.geometry('700x300+400+200') frame1 = Frame(mw) frame2 = Frame(mw) framebot = Frame(mw) frame1.pack(side=TOP,fill=X) frame2.pack(side=TOP,fill=X) framebot.pack(side=BOTTOM,fill=X) btn = Radiobutton(frame2,text='Press Go',font=("Times",16)).pack(side="left") btn3 = Button(framebot,text='Go',font=("Times",16),command=main_program).pack(side="left") btn4 = Button(framebot,text='Exit',font=("Times",16),command=mw.quit).pack(side="right") mw.mainloop() RE: How to dynamically change radiobutton text - BashBedlam - Mar-05-2021 Believe it or not, in order for that to work you will have to put pack on a separate line. I have no idea why btn = Radiobutton(frame2,text='Press Go',font=("Times",16)) btn.pack(side="left") RE: How to dynamically change radiobutton text - deanhystad - Mar-05-2021 Because the pack() method returns None, like any function or method without a return. I think most methods/functions return None. No real statistics, just a hunch. |