To translate this pseudocode into python you would need to know the data structures being referenced, and a bit more of the algorithm implementation. To really see what is happening, you need to coerce the range to a list, np.array, etc. 如果系统中同时安装了python 2和python 3，可使用 pip3 代替 pip：
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Python slicing is a computationally fast way to methodically access parts of your data.
In python 3, your example range (n) [::step] produces a range object, not a list.
97 what does the “at” (@) symbol do in python? In python there is id function that shows a unique constant of an object during its lifetime. In my opinion, to be even an intermediate python programmer, it's one aspect of the language that it is necessary to. @ symbol is a syntactic sugar python provides to utilize decorator, to paraphrase the question, it's exactly about what does decorator do in python?
In python this is simply =.
