如何在 Python 中声明一个数组? [英] How to declare an array in Python?

问题描述

如何在 Python 中声明数组?

How do I declare an array in Python?

我在文档中找不到任何对数组的引用.

I can't find any reference to arrays in the documentation.

推荐答案

variable = []

现在变量指的是一个空列表^*.

Now variable refers to an empty list^*.

当然这是一个赋值，而不是一个声明.在 Python 中没有办法说这个变量不应该引用列表以外的任何东西"，因为 Python 是动态类型的.

Of course this is an assignment, not a declaration. There's no way to say in Python "this variable should never refer to anything other than a list", since Python is dynamically typed.

^*默认的内置 Python 类型称为 list，而不是数组.它是一个任意长度的有序容器，可以容纳异构的对象集合(它们的类型无关紧要，可以自由混合).这不应与 array 模块混淆，它提供了一种更接近 C array 类型的类型；内容必须是同质的(都是同一种类型)，但长度仍然是动态的.

^*The default built-in Python type is called a list, not an array. It is an ordered container of arbitrary length that can hold a heterogenous collection of objects (their types do not matter and can be freely mixed). This should not be confused with the array module, which offers a type closer to the C array type; the contents must be homogenous (all of the same type), but the length is still dynamic.

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