python - Resizing window doesn't resize contents in tkinter -

i'm making first gui application , i've run silly problem. resizing main window doesn't resize contents , leaves blank space. i've read tkdocs , should use sticky , column/row weight attributes don't understand how work. here's code (only part covering widgets, if think problem isn't here i'll post rest of it):

from tkinter import * tkinter import ttk  root = tk()  mainframe = ttk.frame(root, padding="3 3 12 12") mainframe.grid(column=0, row=0, sticky=(n, w, e, s)) mainframe.columnconfigure(0, weight=1) mainframe.rowconfigure(0, weight=1)  player1 = stringvar() player2 = stringvar() player1.set('player 1') player2.set('player 1') timer=stringvar() running=booleanvar() running.set(0) settimer = ttk.entry(mainframe, width=7, textvariable=timer) settimer.grid(column=2, row=1, sticky=(n, s)) ttk.button(mainframe, text="start", command=start).grid(column=2, row=2, sticky=(n, s))  ttk.label(mainframe, textvariable=player1, font=timefont).grid(column=1, row=3, sticky=(w, s)) ttk.label(mainframe, textvariable=player2, font=timefont).grid(column=3, row=3, sticky=(e, s))  child in mainframe.winfo_children():     child.grid_configure(padx=80, pady=10)  root.mainloop() 

thanks time!

maybe in right direction. sure configure column/row weights @ each level.

import tkinter.ttk tkinter.constants import *  class application(tkinter.ttk.frame):      @classmethod     def main(cls):         tkinter.nodefaultroot()         root = tkinter.tk()         app = cls(root)         app.grid(sticky=nsew)         root.grid_columnconfigure(0, weight=1)         root.grid_rowconfigure(0, weight=1)         root.resizable(true, false)         root.mainloop()      def __init__(self, root):         super().__init__(root)         self.create_variables()         self.create_widgets()         self.grid_widgets()         self.grid_columnconfigure(0, weight=1)      def create_variables(self):         self.player1 = tkinter.stringvar(self, 'player 1')         self.player2 = tkinter.stringvar(self, 'player 2')         self.timer = tkinter.stringvar(self)         self.running = tkinter.booleanvar(self)      def create_widgets(self):         self.set_timer = tkinter.ttk.entry(self, textvariable=self.timer)         self.start = tkinter.ttk.button(self, text='start', command=self.start)         self.display1 = tkinter.ttk.label(self, textvariable=self.player1)         self.display2 = tkinter.ttk.label(self, textvariable=self.player2)      def grid_widgets(self):         options = dict(sticky=nsew, padx=3, pady=4)         self.set_timer.grid(column=0, row=0, **options)         self.start.grid(column=0, row=1, **options)         self.display1.grid(column=0, row=2, **options)         self.display2.grid(column=0, row=3, **options)      def start(self):         timer = self.timer.get()         self.player1.set(timer)         self.player2.set(timer)  if __name__ == '__main__':     application.main()