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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 update_selected(self, linenum):
 """Updates the dropdowns to reflect the current class and function."""

        self.parents = _get_parents(self.funcs, linenum)
        update_selected_cb(self.parents, self.method_cb)

        self.parents = _get_parents(self.classes, linenum)
        update_selected_cb(self.parents, self.class_cb)