Question

I am trying to make a basic drawing program with a RadioButton to determine shape of the brush.

self.choseo = Radiobutton(text='Circle', variable=shape,indicatoron=0, value=1)
self.choser = Radiobutton(text='Rectangle', variable=shape,indicatoron=0, value=2)
self.chosea = Radiobutton(text='Arc', variable=shape,indicatoron=0, value=3)

Which corresponds to:

   if shape.get()==3:
      self.display.create_arc( self.x1, self.y1, self.x2,
          self.y2, fill = mycolor, outline= mycolor, tags = "line")
   elif shape.get()==2:
      self.display.create_rectangle( self.x1, self.y1, self.x2,
          self.y2, fill = mycolor, outline= mycolor, tags = "line")
   elif shape.get()==1:
      self.display.create_oval( self.x1, self.y1, self.x2,
          self.y2, fill = mycolor, outline= mycolor, tags = "line")

When i run this i get this error:

"TypeError: get() takes exactly 1 argument (0 given)"

How do i make this work?

Answer 1

You didn’t tell what shape is, but you should make sure your use an instance of IntVar.

Try the following code:

from Tkinter import *
master = Tk()
shape = IntVar() # ensure you use an instance of IntVar
Radiobutton(text='Circle', variable=shape, indicatoron=0, value=1, master=master).pack()
Radiobutton(text='Rectangle', variable=shape, indicatoron=0, value=2, master=master).pack()
Radiobutton(text='Arc', variable=shape, indicatoron=0, value=3, master=master).pack()

and shape.get() will work the way you want.