code: def get_dpi_group(dpi):
      # type: (int) -> Density
      
      if dpi in range(0, 121):
          return Density.XLOW
      elif dpi in range(121, 161):
          return Density.LOW
      elif dpi in range(161, 241):
          return Density.MEDIUM
      elif dpi in range(241, 321):
          return Density.HIGH
      elif dpi in range(321, 481):
          return Density.XHIGH
      elif dpi >= 481:
          return Density.XXHIGH
  
      raise AskSdkException("Unknown dpi group value: {}".format(dpi))
docs: Get viewport density group from given dpi.
  
      :type dpi: int
      :return: viewport density group enum
      :rtype: Density