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python typing tool

Project description

typing_tool

Typing_Tool 是一个 Python 类型工具

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功能

安装

pip install typing_tool

Or

pdm add typing_tool

入门指南

typing_tool 是一个用于增强 Python 类型检查能力的工具库。特别地,它扩展了 isinstance 和 issubclass 函数的能力,使其能够处理更复杂的类型检查需求。

支持类型

like_isinstance

  • 基础类型 str/int/...
  • 容器泛型 list[T]/dict[K, V]/...
  • Union 类型类型
  • Type
  • TypeVar 类型变量
  • 泛型类 Generic[T]
  • Annotated/Field 注解类型
  • Protocol 协议类型
  • Protocol[T] 泛型协议类型
  • TypedDict 字典类型
  • dataclass 数据类
  • dataclass[T] 泛型数据类

like_issubclass

  • 基础类型 str/int
  • 容器泛型 list[T]/dict[K, V]
  • Union 类型类型
  • NewType 新类型
  • Type
  • TypeVar 类型变量
  • 泛型类 Generic[T]
  • Protocol 协议类型
  • Protocol[T] 泛型协议类型

Check Config

  • depth: 设置类型检查的最大深度
  • max_sample: 设置最大采样数
  • protocol_type_strict: 是否严格检查 Protocol 类型
  • dataclass_type_strict: 是否严格检查 dataclass 类型

自动重载

from typing import Any
from typing_extensions import overload
from typing_tool import auto_overload

@overload
def process(response: None) -> None:
    return None
@overload
def process(response1: int, response2: str) -> tuple[int, str]:
    return response1, response2
@overload
def process(response: bytes) -> str:
    return response.decode()
@auto_overload()
def process(*args, **kwargs) -> Any: ...

assert process(None) is None
assert process(1, "2") == (1, "2")
assert process(b"test") == "test"

注意

  • NewType 无法在运行时进行 like_isinstance

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