Python 3.9 增加新的类型 Annotated。比如,类型T用一个元数据x进行注解,Annotated[T, x]。 例子: fromtypingimportAnnotatedimporttypesdefmyadd(a:Annotated[int,"first"],b:Annotated[int,'second']=5)->int:returna+bprint(myadd(10))print(myadd.__annotations__) 结果: 15 {'a': typing.Annota...
$ mypy students2.py students2.py:35: error: Incompatible types in assignment (expression has type List[str], variable has type Dict[str, int]) students2.py:36: error: Dict entry 0 has incompatible type "int": "str" students2.py:36: error: Dict entry 1 has incompatible type "int":...
一、类型注解(type annotation)所谓类型注解,就是人为为一个变量指定类型,例如:const a: number = 123; 在 vscode 中鼠标移入 a 出现提示,冒号后面就是类型注解:? 当不添加类型注解时,typesscript 也能知道变量 a 是一个数字,这就是 typescript 的类型推断:? 二、类型推断(type inference)所谓类型推断......
(11 kB) Collecting annotated-types>=0.4.0 (from pydantic>=2->qianfan) Using cached annotated_types-0.6.0-py3-none-any.whl.metadata (12 kB) Collecting pydantic-core==2.14.5 (from pydantic>=2->qianfan) Using cached pydantic_core-2.14.5-cp312-none-win_amd64.whl.metadata (6.6 kB) ...
importutypefromutype.typesimportAnnotated@utype.parsedeflogin(username:Annotated[str,utype.Param(...
(1.9MB)|████████████████████████████████|1.9MB3.3MB/s Collecting annotated-types>=0.4.0Downloading annotated_types-0.5.0-py3-none-any.whl(11kB)Requirement already satisfied:importlib-metadata;python_version=="3.7"ind:\001_develop\022_python\python37_64\...
Package Version --- --- aiohttp 3.8.5 aiosignal 1.3.1 alembic 1.11.2 annotated-types 0.6.0 appdirs 1.4.4 asttokens 2.2.1 async-timeout 4.0.2 attrs 23.1.0 Automat 22.10.0 backcall 0.2.0 beautifulsoup4 4.12.2 black 23.7.0 blis 0.7.11 Bottleneck 1.3.7 bs4 0.0.1 catalogue 2.0....
pydantic.annotated_types pydantic.class_validators pydantic.color pydantic.config pydantic.dataclasses pydantic.datetime_parse pydantic.decorator pydantic.env_settings pydantic.error_wrappers pydantic.errors pydantic.fields pydantic.generics pydantic.json pydantic.main pydantic.mypy pydantic.networks pydantic.parse...
You can see that both calls to greet() are annotated with debugging information.Defining Decorators With ArgumentsSometimes, it’s useful to pass arguments to your decorators. For instance, @do_twice could be extended to a @repeat(num_times) decorator. The number of times to execute the ...
由于这些信息在运行时丢失了，任何经过大量修改的装饰器都无法知道函数中的给定变量是否被以某种方式注释过...