Python的__init__和self是作什么的？ - What __init__ and self do on Python?

问题：

I'm learning the Python programming language and I've came across something I don't fully understand. 我正在学习Python编程语言，遇到了一些我不太了解的东西。

In a method like: 用相似的方法：

def method(self, blah):
    def __init__(?):
        ....
    ....

What does self do? self作什么的？ What is it meant to be? 这是什么意思？ Is it mandatory? 它是强制性的吗？

What does the __init__ method do? __init__方法有什么做用？ Why is it necessary? 为何有必要？ (etc.) （等等。）

I think they might be OOP constructs, but I don't know very much. 我认为它们多是OOP构造，但我不太了解。

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解决方案：

参考一： https://stackoom.com/question/2cbz/Python的-init-和self是作什么的
参考二： https://oldbug.net/q/2cbz/What-init-and-self-do-on-Python