如何在python中传递给类类型的类方法参数? [英] How to pass to class method argument of class type in python?

问题描述

我有一个类，想定义一个方法，该方法接受类似这样的类类型的参数:

I have a class and would like to define a method that accepts an argument of the same class type like this:

class MyClass:

  def my_method(self, param: MyClass):
    pass

但是我有一个错误未解析的引用'MyClass'

如何解决此问题?

推荐答案

来自

当类型提示中包含尚未定义的名称时，该定义可以表示为字符串文字，稍后再解决.

When a type hint contains names that have not been defined yet, that definition may be expressed as a string literal, to be resolved later.

因此您可以将您的班级名称放在引号中

So you can put your class name inside the quotes:

class MyClass:
  def my_method(self, param: 'MyClass'):
    pass

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