A. Совместимость с API

from functools import wraps
from typing import Callable, TypeVar
T = TypeVar("T")

def api_computable_exceptions(
    exception_mapping: dict[type[Exception], type[Exception]]
) -> Callable[[T], T]:
    def take_in_func(func):
        @wraps(func)
        def wrapper(*args, **kwargs):
            try:
                return func(*args, **kwargs)
            except Exception as exp:
                if type(exp) in exception_mapping:
                    raise exception_mapping[type(exp)]
                else:
                    raise exp
        return wrapper
    return take_in_func