mnogom

class Parent
    ...

    @classmethod
    def __init_subclass__(cls, **kwargs):
        dir_subclass = set(field for field in dir(cls) if not field.startswith(f"_{cls.__name__}__"))
        dir_base = set(field for field in dir(cls.__base__))
        extra_dir = dir_subclass.difference(dir_base)
        if extra_dir:
            raise CellCantHasExtraFieldException(

mnogom

from abc import abstractmethod
from typing import Protocol, Callable, Any, runtime_checkable


@runtime_checkable
class LoggerProtocol(Protocol):
    @abstractmethod
    def echo(self, msg: str) -> None:
        ...

mnogom

// Child (UploadFileComponent.vue)
// TODO: finish setActive and setInactive methods

<template>
  <div
    id="upload-zone"
    class="col-1 mt-2 py-5 border w-100 bg-light rounded"
    @dragover.prevent
    @dragenter="setActive"
    @dragleave="setInactive"