歷代 Python 語法重點隨筆

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紀錄 Python 每一代新出值得注意的新語法，持續更新

3.11

文件還在寫，目前看起來主要是效能上的改進

3.10

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with (CtxManager() as example):
    ...

with (
    CtxManager1(),
    CtxManager2()
):
    ...

with (CtxManager1() as example,
      CtxManager2()):
    ...

with (CtxManager1(),
      CtxManager2() as example):
    ...

with (
    CtxManager1() as example1,
    CtxManager2() as example2
):
    
# 變成
with (
    CtxManager1() as example1,
    CtxManager2() as example2,
    CtxManager3() as example3,
):

終於有 switch 了，讚讚

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def http_error(status):
    match status:
        case 400:
            return "Bad request"
        case 404:
            return "Not found"
        case 418:
            return "I'm a teapot"
        case 401 | 403:
            return "qqqqq"
        case _:
            return "Something's wrong with the internet"
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def square(number: int | float) -> int | float:
    return number ** 2

isinstance(1, int | str)

3.9

Type Hinting Generics In Standard Collections

再也不用 import typing

  • before
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    from typing import List
    def greet_all(names: List) -> None:
        # your code here
  • after
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    def greet_all(names: list[str]) -> None:
        # your code here

3.8

https://docs.python.org/3/whatsnew/3.8.html

支援象牙符號，

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