def scope_split(scope, sep=private.SCOPE_SEPARATOR):

    return scope.split(sep) if scope else [None]
A helper to check if the given field should be treated as nullable.
dataset/ETHPy150Open mission-liao/pyswagger/pyswagger/utils.py/scope_split--crossover with--dataset/ETHPy150Open django/django/django/db/models/sql/query.py/Query.is_nullable