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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 is_valid_int(value):
 """Test if value can be rendered out of int."""

        if 0 <= value <= Parameter.MAX:  # This includes ON and OFF
            return True
        if value == Parameter.UNKNOWN_VALUE:
            return True
        if value == Parameter.CURRENT_POSITION:
            return True
        return False