如何检查两个变量是否在Python中引用了同一对象？ [英] How do I check if two variables reference the same object in Python?

问题描述

x和y是两个变量。

我可以使用 x == y 检查它们是否相等，但如何检查是否

x and y are two variables.
I can check if they're equal using x == y, but how can I check if they have the same identity?

示例：

x = [1, 2, 3]
y = [1, 2, 3]

现在 x == y 是True，因为x和y相等，但是x和y不是同一对象。

我正在寻找类似的东西 sameObject（x，y）在这种情况下应该为False。

Now x == y is True because x and y are equal, however, x and y aren't the same object.
I'm looking for something like sameObject(x, y) which in that case is supposed to be False.

推荐答案

您可以使用 is 检查两个对象是否具有相同的对象

You can use is to check if two objects have the same identity.

>>> x = [1, 2, 3]
>>> y = [1, 2, 3]
>>> x == y
True
>>> x is y
False

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