Cache data and pass it to a method

cache_value_decorator.py

from functools import wraps

def cache(**cached_kwargs):
    def wrap(f):
        @wraps(f)
        def wrapped(self, *args, **kwargs):
            kwargs.update(cached_kwargs)
            return f(self, *args, **kwargs)
        return wrapped
    return wrap
    
class C:
    names = ['Alex', 'Laura', 'John', 'Mia']
    
    @cache(a_names=[name for name in names if name.startswith('A')]
    def get_names_startwith_a(self, a_names):
        return a_names