Python/tkinter Paint Program Undo Function

I tried adding an undo function in my paint program which deletes objects from the canvas (every object created is appended into a stack ) I tried it, and it works but the screen

Solution 1:

When you create your circle in the circle_end function, you need to delete all the temporary circles you created in the circle motion function

The same goes for lines, add this to your code:

def line_end(self,event):
    self.draw_zone.delete('temp_line_objects')
    ...

def circle_end(self,event):
    self.draw_zone.delete('temp_circle_objects') 
    ...

Also, like bryan Oakley said your code doesn't need to be as long as it is. For example you could combine set_tool_circle, set_tool_line and set_tool_point into one function like this:

def set_tool(self, shape):
    self.tool_option = shape