Check if Label already exists in my account using Python

[Shree]

I am trying to write code to check if 'MyLabel' already exists in Labels before creating it. I am using Python.
Using LabelService APIs how should be code written ? Actually I am looking for the use of LabelService.get method but cannot specify serviceSelector correctly.
This code gives error for serviceSelector SelectorError.INVALID_FIELD_NAME

    label_service = client.GetService('LabelService', version='v201409')
    serviceSelector = {'fields': ['id', 'name'],
                  'predicates' : {'field' : 'name', 'operator' : 'EQUALS', 'values' : 'MyLabel'}
                }
    result =  label_service.get(serviceSelector)

[Anash P. Oommen (AdWords API Team)]

Hi Shree,

I have responded to your original question on https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!msg/adwords-api/luSgfAYfw7E/BciPew4OeBcJ

Cheers,
Anash P. Oommen,
AdWords API Advisor.