DeviceInfo() in ivi.dmm.py has only getters and no setters. However, for example the agilent/keysight 34465a can set the advanced.aperture_time and advanced.aperture_time_unit.
Therefore either the advanced.aperture_time functions should be moved to a different class, or the device info should be extended with the setters and the text

"A set of read-only attributes for DMMs "

should be adjusted as it will not longer be read-only.

edit1: I am working on some code to fix this. It works but it needs some work to put every thing in the right place.