title: Python TypeError: __init__() got multiple values for argument 'master'
body: <p>Trying to build a GUI in Python at the moment, and I'm stuck at this part in particular. Every time I try to run my code it just throws the error <code>TypeError: __init__() got multiple values for argument 'master'</code>. I can't seem to find where I'm passing  it more than one value, and it's got me scratching my head. I tried searching the error but the fixes other people had listed I can't see how to make them work with this one. Any guidance would be much appreciated. See code sample below:</p>
  
  <pre><code>class Plotter(tk.Canvas):
      """Creates a canvas for use in a GUI
      Plotter() -&gt; Canvas
      """
      def __init__(self, master, **kwargs):
          super().__init__(self, master = master, **kwargs)
          self.bind("&lt;Configure&gt;", self.on_resize)
          self.height = self.winfo_reqheight()
          self.width = self.winfo_reqwidth()
          self.bg = 'white'
          self.relief = 'raised'
  
  class AnimalDataPlotApp(object):
      """This is the top level class for the GUI, and is hence responsible for
      creating and maintaining instances of the above glasses
      """
  
      def __init__(self, master):
          """Initialises the window and creates the base window for the GUI.
          __init__() -&gt; None
          """
          master.title('Animal Data Plot App')
          self._master = master
          self._text = tk.Text(master)
          self._text.pack
          menubar = tk.Menu(master)
          master.config(menu = menubar)
          filemenu = tk.Menu(menubar) #puts filemenu into the menubar
          menubar.add_cascade(label = 'File', menu = filemenu)
          filemenu.add_command(label = 'Open', command = self.open_file)
  
          #frame for canvas
          plotter_frame = tk.Frame(master, bg = 'red')
          plotter_frame.pack(side = tk.RIGHT, anchor = tk.NW, fill = tk.BOTH, expand = True)
  
          #frame for buttons
          button_frame = tk.Frame(master, bg = 'yellow')
          button_frame.pack(side=tk.TOP, anchor=tk.NW, ipadx=50, fill = tk.X)
  
          #Label on the top left
          left_label = tk.Label(button_frame, text='Animal Data Sets', bg='orange')
          left_label.pack(side=tk.TOP, anchor=tk.N, fill=tk.X)
  
          #second frame, for selection list
          selection_frame = tk.Frame(master, bg = 'blue')
          selection_frame.pack(side = tk.LEFT, anchor=tk.NW, fill = tk.BOTH, expand = True)
  
          #draw buttons in frame
          select = tk.Button(button_frame, text ='Select')
          select.pack(side=tk.TOP, anchor=tk.N)
          deselect = tk.Button(button_frame, text='Deselect')
          deselect.pack(side=tk.TOP, anchor=tk.N)
  
          self.selectionbox = SelectionBox(selection_frame)
          self.selectionbox.pack(side = tk.TOP, expand = True, fill=tk.BOTH)
          #self._selectionbox.show_animals(self._data)
  
          self.plotter = Plotter(plotter_frame)
          self.plotter.pack(side = tk.TOP, expand = True, fill=tk.BOTH)
  </code></pre>