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9 mlm_JJh Ȯ2o q3am_J2R P!!\hJbѿ m#! /usr/bin/env python from Tkinter import * from Canvas import Oval, Group, CanvasText # Fix a bug in Canvas.Group as distributed in Python 1.4. The # distributed bind() method is broken. This is what should be used: class Group(Group): def bind(self, sequence=None, command=None): return self.canvas.tag_bind(self.id, sequence, command) class Object: """Base class for composite graphical objects. Objects belong to a canvas, and can be moved around on the canvas. They also belong to at most one ``pile'' of objects, and can be transferred between piles (or removed from their pile). Objects have a canonical ``x, y'' position which is moved when the object is moved. Where the object is relative to this position depends on the object; for simple objects, it may be their center. Objects have mouse sensitivity. They can be clicked, dragged and double-clicked. The behavior may actually determined by the pile they are in. All instance attributes are public since the derived class may need them. """ def __init__(self, canvas, x=0, y=0, fill='red', text='object'): self.canvas = canvas self.x = x self.y = y self.pile = None self.group = Group(self.canvas) self.createitems(fill, text) def __str__(self): return str(self.group) def createitems(self, fill, text): self.__oval = Oval(self.canvas, self.x-20, self.y-10, self.x+20, self.y+10, fill=fill, width=3) self.group.addtag_withtag(self.__oval) self.__text = CanvasText(se