HP 5920 series Fundamentals Configuration Manual page 173

[[- 1 ,slot-number]]—The IRF fabric has only one subordinate device.
•
• [[- 1 ,slot-number1],[- 1 ,slot-number2],...]—The IRF fabric has multiple subordinate devices. The
slot-number arguments indicate the member IDs of the subordinate devices.
Examples
# Get the member IDs of all subordinate devices.
<Sysname> python
Python 2.7.3 (default, May 24 2014, 14:37:26)
[GCC 4.4.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import comware
>>> comware.get_standby_slot()
Sample output
[]
165