find subclasses and bases

inspect.py

import inspect
from typing import List, TypeVar, Type, Set

T = TypeVar('T')


def find_subclasses(cls: Type[T], deep=True) -> List[Type[T]]:
    res: List[Type[T]] = []
    subclasses: List[Type[T]] = cls.__subclasses__()
    for subclass in subclasses:
        if not inspect.isabstract(subclass):
            res.append(subclass)
        if deep:
            sub_res = find_subclasses(subclass, deep=deep)
            res = res + sub_res
    return res


def find_bases(cls: Type[T]) -> Set[Type[T]]:
    res: Set[Type[T]] = set(cls.__mro__)
    res.remove(cls)
    return res