Python类型提示-具有类的提示返回类型而不是给定类的实例

问题描述

在这种情况下，我有两种方便的方法可以从入口点查找和初始化类，并且想将它们的作用区分开来。

以下是我的问题的简化版本

class ToBeExtended:
   """ Abstract base class that is to be extended """
   pass

def find(classname: str) -> ToBeExtended:
    """ Find the class deFinition of the class named `classname` from the entry points """
    ... # Get the class
    return ClassDeFinition

def connect(classname: str,*args,**kwargs) -> ToBeExtended:
    """ Find and initialise the class with the passed arguments and return """
    return find(classname)(*args,**kwargs)

在此示例中，

find返回一个类对象，而不是实例。

有没有办法将其包装起来，以便将上下文提供给linter / user？ typing中似乎没有任何内容，我想拥有该类可识别的，没什么像-> type:

解决方法

import typing

class ToBeExtended:
   """ Abstract base class that is to be extended """
   pass

def find(classname: str) -> typing.Type[ToBeExtended]:
    """ Find the class definition of the class named `classname` from the entry points """
    ... # Get the class
    return ClassDefinition

def connect(classname: str,*args,**kwargs) -> ToBeExtended:
    """ Find and initialise the class with the passed arguments and return """
    return find(classname)(*args,**kwargs)