title: How to justify text in a Button in Python ttk
body: <p>I'm trying to justify (align) text in a button, let's say to the left.
  I've found some useful code <a href="https://stackoverflow.com/questions/48770877/how-to-create-arrow-in-a-tkinter-ttk-button-and-control-its-size" title="here">here</a>, based on that I've created code below to check how the label behaves.</p>
  
  <pre><code>import tkinter as tk
  import tkinter.ttk as ttk
  
  
  app = tk.Tk()
  style = ttk.Style()
  style.layout(
          'Left1.TButton',[
              ('Button.button', None),
              ('Button.focus', {'children': [                
                  ('Button.padding', {'children': [
                      ('Button.label', {'side' : 'left'}
                       )]}
                   )]}
               )]
          )
  
  print("TButton.label-&gt;justify: ", style.lookup('TButton.label', 'justify'))
  print("TButton.label-&gt;side: ", style.lookup('TButton.label', 'side'))
  
  style.configure('TButton.label', justify='left')
  style.configure('TButton.label', side='left')
  
  print("TButton.label-&gt;justify: ", style.lookup('TButton.label', 'justify'))
  print("TButton.label-&gt;side: ", style.lookup('TButton.label', 'side'))
  
  
  ttk.Button(text="TButton", width=100, style="TButton").pack()
  ttk.Button(text="Lef1.TButton", width=100, style="Left1.TButton").pack()
  
  print("TButton.label options:\n", style.element_options('TButton.label'))
  </code></pre>
  
  <p>Problem is that there's no effect on the label. It stays in the center of the button.
  What is even more interesting is last line.
  Output is:</p>
  
  <pre><code>TButton.label options:
   ('compound', 'space', 'text', 'font', 'foreground', 'underline', 'width', 'anchor', 'justify', 'wraplength', 'embossed', 'image', 'stipple', 'background')
  </code></pre>
  
  <p>But if I try to set 'anchor' I'm getting exception. I know this feature is absent in ttk but why is it showing up here?</p>