title: Changing font for four buttons at once in tkinter
body: <p><strong>Goal</strong></p>
  
  <p>I have created 4 buttons that are in the default font in Tkinter. Now I decided that all the four buttons are too small. So I want to increase the size of the font in them. </p>
  
  <p><strong>Problem faced</strong></p>
  
  <p>I don't want to add the thing <code>font=custom</code> where <code>custom=tkFont.Font(family='Helvetica',size='18')</code> in all the four statements.</p>
  
  <p>Is there a way to do this for the whole frame that these buttons are there in?</p>
  
  <p><strong>code</strong></p>
  
  <pre><code>f = self.frame
  custom = Font(family='Helvetica',size=15)
  
  start = Button(f,text='START',command=self.startrunning)
  
  
  start.pack(side="top")
  
  
  stop =Button(f,text='STOP',command=self.stoprunning)
  stop.pack(side="top")
  
  lap = Button(f,text='LAP',command=self.endlap)
  lap.pack(side='top')
  
  reset = Button(f,text="RESET",command = self.reset)
  reset.pack(side="top")
  
  close = Button(f,text="QUIT",bg="black",fg = "red",command=self.quitwin)
  close.pack(side="top")
  </code></pre>
  
  <p><strong>Please</strong> help me with some shortcut to achieve the goal. And if there is no shortcut please tell me that too!</p>