mapgraph 0.1.8

一个便捷实用的上下文管理工具

Mapgraph

Mapgraph 是一个便捷实用的上下文管理工具

一阴一阳之谓道

功能

• 上下文管理/切换
• 描述器支持
• 一流的类型支持

安装

pip install mapgraph

Or

pdm add mapgraph

入门指南

全局上下文对象

from mapgraph.instance_of import get_instance
from mapgraph.globals import GLOBAL_INSTANCE_CONTEXT

GLOBAL_INSTANCE_CONTEXT.store(666)

assert get_instance(int) == 666

描述器支持

from mapgraph.instance_of import InstanceOf, get_instance
from mapgraph.globals import GLOBAL_INSTANCE_CONTEXT

GLOBAL_INSTANCE_CONTEXT.store(666)

class Test:
    a = InstanceOf(int)

assert Test().a == 666

实例上下文

from mapgraph.instance_of import InstanceOf, get_instance
from mapgraph.context import InstanceContext
from mapgraph.globals import GLOBAL_INSTANCE_CONTEXT

context = InstanceContext()

GLOBAL_INSTANCE_CONTEXT.store(666)

context.store(6, "6")

assert get_instance(int) == 666

with context.scope():
    assert get_instance(int) == 6
    assert get_instance(str) == "6"

泛型支持

from typing import TypeVar, Generic
from typing_extensions import Annotated

from mapgraph.instance_of import get_instance
from mapgraph.context import InstanceContext
from mapgraph.globals import GLOBAL_INSTANCE_CONTEXT

from pydantic import Field

T = TypeVar("T")


class Obj(Generic[T]):
    a: T

    def __init__(self, a: T):
        self.a = a


context = InstanceContext()
local_context = InstanceContext()

GLOBAL_INSTANCE_CONTEXT.store("GLOBAL", 10, {"a": 10}, Obj[int](10))
local_context.store(1, {1: "a"}, Obj[str]("1"))
context.store("context")


assert get_instance(Obj[int]).a == 10

with local_context.scope():
    assert get_instance(Obj[str]).a == "1"
    with context.scope():
        assert get_instance(int) == 1
        assert get_instance(Annotated[int, Field(gt=1)]) == 10
        assert get_instance(dict) == {1: "a"}
        assert get_instance(dict[str, int]) == {"a": 10}

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

like_issubclass

• 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]
• Protocol 协议类型
• Protocol[T] 泛型协议类型