title: Tkinter display unicode char in Button text
body: <p>I am trying to display a unicode character on a button as text .
  In tkinter I can display a unicode character using <code>text=u"\u00f7"</code></p>
  
  <pre><code>b = Button(master,text=u"\u00f7", width=10, command=callback)
  b.pack() 
  </code></pre>
  
  <p>But I wish to create a list of unicode characters and then pass it to the Button widget in tkinter through a for loop.</p>
  
  <pre><code> from Tkinter import *
  
   master =Tk()
   upper=["\u00f7","\u00f7","\u00f7"]
   key_var1=100
   key_var2=150
   keypad_bttn=[]
   for k in range(0,3):
                  keypad_bttn.append(Button(master, text = upper[k],))
                  keypad_bttn[k].place(x=key_var1,y=key_var2)
                  key_var1=key_var1+40
  
  
   master.mainloop()
  </code></pre>