title: How can I establish a default String value on a Tkinter Spinbox?
body: <p>I have read a good solution for establishing a default numerical value on a Tkinter Spinbox widget when you use the from_ to options. But I have not seen a single one that can help establish a value (numerical or string) from a tuple.</p>
  
  <p>My code is as follows, and is intended to set a default value in a Tkinter Spinbox widget from a tuple:</p>
  
  <pre><code>from Tkinter import *
  
  root = Tk()
  root.geometry('200x200+50+50')
  root.title('Prueba')
  
  t = ('One', 'Two', 'Three', 'Four', 'Five')
  v = t[3]
  
  var = StringVar()
  var.set(v)
  sb = Spinbox(root, values=t, textvariable=var, width=10)
  sb.place(x=5, y=15)
  
  root.mainloop()
  </code></pre>
  
  <p>Another variant that I have tried is the following:</p>
  
  <pre><code>from Tkinter import *
  
  root = Tk()
  root.geometry('200x200+50+50')
  root.title('Prueba')
  
  var = StringVar()
  var.set('Four')
  sb = Spinbox(root, ('One', 'Two', 'Three', 'Four', 'Five'), textvariable=var, width=10)
  sb.place(x=5, y=15)
  
  root.mainloop()
  </code></pre>
  
  <p>The only way the set method works on Spinbox (and which I took from here) is the following and only works with numbers and within a range established as options in the Spinbox widget:</p>
  
  <pre><code>from Tkinter import *
  
  root = Tk()
  root.geometry('200x200+50+50')
  root.title('Prueba')
  
  var = StringVar()
  var.set(4)
  sb = Spinbox(root, from_=1, to=5, textvariable=var, width=10)
  sb.place(x=5, y=15)
  
  root.mainloop()
  </code></pre>
  
  <p>Can please anyone help me to find out how to establish a default value in a Tkinter Spinbox from a Tuple? I will appreciate that greatly!</p>