fffclaypool

from dataclasses import dataclass, field
from functools import cached_property


def make_lambda():
    return lambda x: x * 2


@dataclass(frozen=True)
class FuncHolderA:

fffclaypool

from google.cloud.bigquery_storage_v1 import types
from google.cloud.bigquery_storage_v1.services.big_query_read import \
    BigQueryReadAsyncClient
import asyncio, aiohttp, pyarrow as pa

PROJECT_ID   = "my-project"
TABLE        = "projects/my-project/datasets/my_ds/tables/my_tbl"
PARALLEL_API = 30              # 外部 API 同時呼び出し上限
BATCH_ROWS   = 5000           # BQ→クライアント 1 チャンク当たりの行数

fffclaypool

from concurrent.futures import ThreadPoolExecutor, Future
from typing import Callable, TypeVar, Generic, Any


# 型変数の定義
A = TypeVar('A')
B = TypeVar('B')


# --- Par の実装 ---

fffclaypool

from typing import Optional


class Event:
    def __init__(self, name: str) -> None:
        self.name = name

    def __str__(self) -> str:
        return self.name

fffclaypool

from abc import ABC, abstractmethod
from enum import Enum, auto


class State(Enum):
    NEW = auto()
    RUNNING = auto()
    SLEEPING = auto()
    RESTART = auto()
    ZOMBIE = auto()

fffclaypool

from typing import Callable, Protocol


class Organizer(Protocol):
    def organize_event(self) -> str:
        ...


class Musician:
    def play(self) -> str:

fffclaypool

from typing import Protocol


class Animal(Protocol):
    def sound(self) -> str:
        ...


"""
構造的サブタイピングとは、オブジェクトやクラスが、あるインターフェースや型の要件を、その内部構造(メソッドや属性の存在)によって満たしているかどうかで判断する型システムのアプローチのこと

fffclaypool

import argparse
from abc import ABCMeta, abstractmethod
from typing import Type


class Engine(metaclass=ABCMeta):
    @abstractmethod
    def start(self) -> None:
        ...

fffclaypool

from typing import TypeVar, Generic, Callable, Optional


T = TypeVar("T")
U = TypeVar("U")
X = TypeVar("X")
R = TypeVar("R")
S = TypeVar("S")
A = TypeVar("A")
B = TypeVar("B")

fffclaypool

import time
import random
import functools
from typing import Callable, TypeVar

# Python 3.10以降の場合
#from typing import ParamSpec
# Python 3.9以下の場合
from typing_extensions import ParamSpec