title: .bind() not working for shift-key binds?
body: <p>As you can tell this is my calculator program. I wanted the user to be able to use it not only by clicking the buttons with the mouse, but to also be able to use the keyboard. So I used .bind() and all of them work fine, except for the 5 binds that use the shift key, only the first two(shift-= and shift-8) work, and I do not see a reason why the other three(shift-6, shift-5 and shift-1) don't work. Every time I click Shift-1 or SHift-5 or Shift-6 it literally does nothing.</p>
  
  <p>btw here are is the section of the code containing the binds if u couldn't find it above:</p>
  
  <pre><code># ---------------Key Bindings---------------
  
          root.bind('&lt;Delete&gt;', self.button_clear_press)
  
          root.bind('&lt;Escape&gt;', self.button_off_press)
  
          root.bind('`', self.chargeInvert)
  
          root.bind('=', self.equals)
  
          root.bind('.', self.decimal)
  
          root.bind('9', lambda x: self.numButton_press('9'))
  
          root.bind('8', lambda x: self.numButton_press('8'))
  
          root.bind('7', lambda x: self.numButton_press('7'))
  
          root.bind('6', lambda x: self.numButton_press('6'))
  
          root.bind('5', lambda x: self.numButton_press('5'))
  
          root.bind('4', lambda x: self.numButton_press('4'))
  
          root.bind('3', lambda x: self.numButton_press('3'))
  
          root.bind('2', lambda x: self.numButton_press('2'))
  
          root.bind('1', lambda x: self.numButton_press('1'))
  
          root.bind('0', lambda x: self.numButton_press('0'))
  
          root.bind('+', lambda x: self.mathButton_press('+'))
  
          root.bind('&lt;Shift-=&gt;', lambda x: self.mathButton_press('+'))
  
          root.bind('-', lambda x: self.mathButton_press('-'))
  
          root.bind('*', lambda x: self.mathButton_press('×'))
  
          root.bind('&lt;Shift-8&gt;', lambda x: self.mathButton_press('×'))
  
          root.bind('/', lambda x: self.mathButton_press('÷'))
  
          root.bind('&lt;Shift-6&gt;', lambda x: self.mathButton_press('^'))
  
          root.bind('&lt;Shift-5&gt;', lambda x: self.mathButton_press('%'))
  
          root.bind('&lt;Shift-1&gt;', lambda x: self.mathButton_press('!'))
  </code></pre>