code: def btaddrtochars(addr):
      
      if not _lightbluecommon._isbtaddr(addr):
          raise TypeError("address %s not valid bluetooth address" % str(addr))
      if addr.find(":") == -1:
          addr = addr.replace("-", ":")   # consider alternative addr separator
  
      # unhexlify gives binary value like '\x0e', then ord to get the char value.
      # unhexlify throws TypeError if value is not a hex pair.
      import binascii
      chars = [ord(binascii.unhexlify(part)) for part in addr.split(":")]
      return tuple(chars)
docs: Takes a bluetooth address and returns a tuple with the corresponding
      char values. This can then be used to construct a
      IOBluetoothDevice object, providing the signature of the withAddress:
      selector has been set (as in _setpyobjcsignatures() in this module).
  
      For example:
          >>> chars = btaddrtochars("00:0e:0a:00:a2:00")
          >>> chars
          (0, 14, 10, 0, 162, 0)
          >>> device = _IOBluetooth.IOBluetoothDevice.withAddress_(chars)
          >>> type(device)
          <objective-c class IOBluetoothDevice at 0xa4024988>
          >>> device.getAddressString()
          u'00-0e-0a-00-a2-00'