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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 to_label(var_instance):
 """ Converts a var_instance to a label one """

        # This can be done 'cause LABEL is just a dummy descent of VAR
        assert isinstance(var_instance, SymbolVAR)
        from symbols import LABEL
        var_instance.__class__ = LABEL
        var_instance.class_ = CLASS.label
        var_instance._scope_owner = []
        return var_instance