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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 level(self, new_level):
 """Sets the new output level."""

    if self._level == new_level:
      return
    self._lutron.send(Lutron.OP_EXECUTE, Output._CMD_TYPE, self._integration_id,
        Output._ACTION_ZONE_LEVEL, "%.2f" % new_level)
    self._level = new_level