title: tkinter stretching widgets within a frame
body: <p>I'm currently trying to make a basic GUI with 5 buttons stuck on the bottom of the screen within a frame. What I have currently is 2 buttons in a frame. The frame is packed to the bottom. I'm trying to have those 2 button fill the frame.</p>
  
  <pre><code>##IMPORTS--------------------------------------------
  from tkinter import *
  import tkinter.font
  ##GUIWindow------------------------------------------
  window = tkinter.Tk()                   
  screen_w = window.winfo_screenwidth()  
  screen_h = window.winfo_screenheight()
  window.geometry('%dx%d' % (screen_w, screen_h))
  window.title("betaV00")
  myFont = tkinter.font.Font(family = 'Helvetica', size = 12, weight = "bold")
  ##WIDGET_BottomButtons---------------------------------
  h=6
  bot_frame = Frame(window, height = int(screen_h/10), width = int(screen_w))
  bot_frame.pack(side=BOTTOM)
  
  btn_HOME = Button(bot_frame, text="Home", font=myFont, bg='green', fg='white', height=h)
  btn_HOME.grid(row = 0, column = 0)
  btn_LEDS = Button(bot_frame, text="LEDS", font=myFont, bg='black', fg='green', height=h)
  btn_LEDS.grid(row = 0, column = 1)
  
  bot_frame.columnconfigure(0, weight=1)
  bot_frame.columnconfigure(1, weight=1)
  ##-----------------------------------------------------
  
  window.mainloop()
  </code></pre>
  
  <p>I can get it to work if the buttons are not in a frame. What is currently happening is the two buttons are not stretching and are placed in the middle side by side. What can/should I do to have those buttons expand?</p>