Sphinx - 从父方法插入参数文档

我有一些相互继承的类。所有类都包含相同的方法（让我们称之为mymethod），子级由此覆盖基类方法。我想生成一个文档mymethod在所有班级中使用sphinx.

Suppose mymethod接受争论myargument。此参数对于基方法和继承方法具有相同的类型和含义。为了尽量减少冗余，我想编写文档myargument仅适用于基类和insert子方法文档中的文档。也就是说，我不想只放置对基类的简单引用，而是在生成文档时动态插入文本。

这可以做到吗？如何？

下面请找到一些说明问题的代码。

class BaseClass
    def mymethod(myargument):
        """This does something

        Params
        ------
        myargument : int
            Description of the argument

        """
        [...]


class MyClass1(BaseClass):
    def mymethod(myargument):
        """This does something

        Params
        ------
        [here I would like to insert in the description of ``myargument`` from ``BaseClass.mymethod``]
        """

        BaseClass.mymethod(myargument)
        [...]

class MyClass2(BaseClass):
    def mymethod(myargument, argument2):
        """This does something

        Params
        ------
        [here I would like to insert in the description of ``myargument`` in ``BaseClass.mymethod``]
        argument2 : int
            Description of the additional argument

        """

        BaseClass.mymethod(argument)
        [...]

可能并不理想，但也许您可以使用装饰器来扩展文档字符串。例如：

class extend_docstring:
    def __init__(self, method):
        self.doc = method.__doc__

    def __call__(self, function):
        if self.doc is not None:
            doc = function.__doc__
            function.__doc__ = self.doc
            if doc is not None:
                function.__doc__ += doc
        return function


class BaseClass:
    def mymethod(myargument):
        """This does something

        Params
        ------
        myargument : int
            Description of the argument
        """
        [...]


class MyClass1(BaseClass):
    @extend_docstring(BaseClass.mymethod)
    def mymethod(myargument):
        BaseClass.mymethod(myargument)
        [...]

class MyClass2(BaseClass):
    @extend_docstring(MyClass1.mymethod)
    def mymethod(myargument, argument2):
        """argument2 : int
            Description of the additional argument
        """

        BaseClass.mymethod(argument)
        [...]


print('---BaseClass.mymethod---')
print(BaseClass.mymethod.__doc__)
print('---MyClass1.mymethod---')
print(MyClass1.mymethod.__doc__)
print('---MyClass2.mymethod---')
print(MyClass2.mymethod.__doc__)

Result:

---BaseClass.mymethod---
This does something

        Params
        ------
        myargument : int
            Description of the argument

---MyClass1.mymethod---
This does something

        Params
        ------
        myargument : int
            Description of the argument

---MyClass2.mymethod---
This does something

        Params
        ------
        myargument : int
            Description of the argument
        argument2 : int
            Description of the additional argument

如果您将装饰器设为描述符并在其中搜索它，则可以动态解析覆盖方法__get__但这意味着装饰器不再可堆叠，因为它不返回真正的函数。