yang_to_legacy fails on gnpy-eqpt-config:equipment when converting the full API payload

[RenatoParker]

I’m reporting a bug in gnpy related to the YANG conversion functions.

I’m using yang_to_legacy to develop the gnpy APIs.

I’m doing:

legacy_data = yang_to_legacy(json.loads(request.json))

and then I expect to be able to read:

service = legacy_data['gnpy-path-computation:services']
topology = legacy_data['gnpy-network-topology:topology']
equipment = legacy_data['gnpy-eqpt-config:equipment']

but I get this error:

cr = raman_coefficient.pop('cr')
TypeError: 'str' object cannot be interpreted as an integer

The issue seems to come from a conversion problem, because it works if I convert only the equipment part of the API payload:

equipment = yang_to_legacy(json.loads(request.json)["gnpy-api:api"]['gnpy-eqpt-config:equipment'])

So the result of yang_to_legacy seems to be different depending on whether I pass the full payload or only the gnpy-eqpt-config:equipment section.

I added some debug prints for dict/list conversion here:
https://pastebin.com/GxRzQht5