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Python内置函数id

程序员文章站 2022-06-14 10:04:13
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英文文档:

id(object)


Return the “identity” of an object. This is an integer which is guaranteed to be unique and constant for this object during its lifetime. Two objects with non-overlapping lifetimes may have the sameid() value.

CPython implementation detail: This is the address of the object in memory.


说明:

  1. 返回对象的唯一标识符,用整数表示。在程序生命周期内,这个标识符常量是唯一的。

>>> a = 1
>>> id(a)
>>> id(1.0)
>>> a = 'some text'
>>> id(a)
相关标签: 函数 Python