default_device

default_device() → device

Returns the default device.

Returns:

out (device) – an object (including None) corresponding to the default device.

Notes

• A conforming array library may return None if the default device is not predictable due to library specific device placement rules.

New in version 2023.12.

Changed in version 2025.12: Clarified support for returning None when the default device is not predictable.