我该如何理解酸洗和解酸洗工作原理的描述？

Question

Python in a Nutshell 中对 pickling 和 unpickling 的以下描述让我感到困惑。我不清楚 "otherwise" 和 "in this one case" 的用法，我不确定它们指的是什么情况。如果您能以更清晰的方式（也许是伪代码）重新表述，我将不胜感激？

Here is how pickle saves the state of instance object x of class T and later reloads the saved state into a new instance y of T (the first step of the reloading is always to make a new empty instance y of T , except where we explicitly say otherwise in the following):

• When T supplies the method __getstate__ , pickle saves the result d of calling T.__getstate__(x) .

• When T supplies the method __setstate__, d can be of any type, and pickle reloads the saved state by calling T.__setstate__(y, d) .

• Otherwise, d must be a dictionary, and pickle just sets y.__dict__ = d.

• Otherwise, when T supplies the method __getnewargs__ , and pickle is pickling with protocol 2 or higher, pickle saves the result t of calling T.__getnewargs__(x) ; t must be a tuple.

• pickle , in this one case, does not start with an empty y , but rather creates y by executing y = T.__new__(T, *t) , which concludes the reloading.

• Otherwise, by default, pickle saves as d the dictionary x.__dict__ .

• When T supplies the method __setstate__, pickle reloads the saved state by calling T.__setstate__ (y, d) .

• Otherwise, pickle just sets y.__dict__ = d .

Answer 1

该描述确实需要缩进或其他内容以更好地表明什么是什么。这是它试图说的，作为流程图：