peacock0803sz
def greet(name: str) -> str: return "Hello, " + name
:
->
bool
bytes
float
int
str
None
dict
frozenset
list
set
tuple
[]
from __future__ import annotaions
typing
list[str]
dict[str, int]
from typing import ...
from typing import Any unknown_variable: Any
Union: 合併型。3.10以降は|で表せる 例:文字列と整数をどっちも受け入れる関数
Union
|
from __future__ import annoations # 3.7 - 3.9は必要 def normalize_year(year: int | str) -> int: if isinstance(year, int): return year # ここではyearは数値 # これ以降ではyearは文字列 if year.startswith("昭和"): return int(year[2:]) + 1925 elif year.startswith("平成"): return int(year[2:]) + 1988 elif year.startswith("令和"): return int(year[2:]) + 2018 else: raise ValueError('unsupported style')
from typing import Union # for 3.6 def normalize_year(year: Union[int, str]) -> int: pass
from typing import Optional age: Optional[int] age = 17 age = None # これも有効 age: int | None # 3.9以降ならこれでもいい
デコレーター関数など、関数を引数に取る関数を書くときに使える
from collections.abc import Callable # 3.9以降 from fuctools import wraps from typing import Callable # 3.8以前 def validate(func: Callable) -> Callable[..., Callable | tuple[Response, Literal[400]]]: @wraps(func) def wrapper(*args, **kw) -> Callable | tuple[Response, Literal[400]]: try: j = request.json if j is None: raise BadRequest except BadRequest: return jsonify({"data": [], "errors": {"message": ERROR_MESSAGE, "code": 400}}), 400 return func(*args, **kw) return wrapper
https://www.python.org/downloads/
__future__
print_func
unicode_literals
__builtins__
collections
collections.abc
re
contextlib
isinstance()