xtuml/meta.py
def select_one(self, *args):
        '''
        Select a single instance from the instance pool. Query operators such as
        where_eq(), order_by() or filter functions may be passed as optional
        arguments.
        '''
        s = apply_query_operators(self.storage, args)
        return next(iter(s), None)
def select_one(self, *args):
        '''
        Select a single instance from the instance pool. Query operators such as
        where_eq(), order_by() or filter functions may be passed as optional
        arguments.
        '''
        s = apply_query_operators(self.storage, args)
        return next(iter(s), None)
Select a single instance from the instance pool. Query operators such as
        where_eq(), order_by() or filter functions may be passed as optional
        arguments.