topic Re: Accessing a a yang list in Python code in NSO Developer Hub Discussions

Accessing a a yang list in Python code

Fantolino — Fri, 31 May 2019 09:43:59 GMT

Hi! I’m trying to access in python to the elements of a yang list. The yang model is:

list Prenotazione {

key "TempoAtt";

unique "TempoDis";

leaf TempoAtt {

type string

}

…

And the code I’m trying to use is something

FirstElementKey = service.Prenotazione.????

In order to access the leaf inside le list element with code such as:

MyData = service.Prenotazione[FirstElementKey].LeafName

How can I do? Is it corect to assume the lis is ordered according to the key?

jfloresr — Fri, 31 May 2019 13:02:23 GMT

Hi, in service create code, the service object is an instance of the particular service being instantiated at that moment.

For example (using your yang model):

service.TempoAtt

If you want to access data from other service instances use the root object like so:

root.services.Prenotazione[FirstElementKey]

BTW root.services.Prenotazione returns an iterator so you can just walk it without needing to know the keys.

For what I have seen yes, the service is ordered by the key.