PyCharm中具有nptyping和数组的Numpy Typehint [英] Numpy Typehint with nptyping and Array in PyCharm

问题描述

我尝试将numpy与nptyping的Array一起使用来进行类型提示.

I try to use numpy with nptyping's Array to do my typehinting.

我尝试了以下操作:

enemy_hand: Array[float, 48] = np.zeros(48)

我遇到了打字错误:

预期类型为'Array [float，Any]'，而改为'ndarray'

Expected Type 'Array[float, Any]', got 'ndarray' instead

据我了解，

: https://pypi.org/project/nptyping/那就是它的外观.

as far as I understand from this: https://pypi.org/project/nptyping/ thats how it should look.

推荐答案

nptyping当前无法用于静态分析.图书馆的开发人员在其问题跟踪器上引用了帖子，

nptyping is currently useless for static analysis. Quoting a post by the library's developer on its issue tracker,

mypy尚不支持

mypy

我对那个还没有"寄予太大希望. NumPy的dtype和形状处理很难适应typing/mypy静态类型模型，并且nptyping自己的设计决策不适合NumPy本身.例如，它看起来像开发人员从未考虑过的不是2D数组，因此Array[str, 3]表示具有3行和未指定列的2D数组，而不是3元素的1D数组.所有的实现方式也都是基于行和列.

I wouldn't put much hope in that "yet". NumPy's dtype and shape handling is very hard to fit into the typing/mypy static type model, and nptyping's own design decisions are a poor fit for NumPy itself. For example, it doesn't look like the dev ever considered arrays that aren't 2D, so Array[str, 3] represents a 2D array with 3 rows and unspecified columns instead of a 3-element 1D array. All the implementation is in terms of rows and columns, too.

据我所知，nptyping唯一真正的功能是isinstance检查，甚至是越野车.

As far as I can tell, the only real functionality nptyping has is isinstance checks, and even that's buggy.

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