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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def init_layout(self):

 """ Initialize the layout of the toolkit shape.
 
 This method is called during the bottom-up pass. This method
 should initialize the layout of the widget. The child widgets
 will be fully initialized and layed out when this is called.
 
 """

        for child in self.children():
            self.child_added(child)
        self.update_shape({})