Disk¶

A disk is a sized element on a Rod where: 1 <= size <= rod_height

class towers.core.disk.Disk[source]¶

An immutable representation of a sized disk that sits on a Rod.

static __new__(cls, original_position, height=1)[source]¶

Parameters:	original_position (int) – The position on the Rod that this disks originally sat. Zero = The bottom of the Rod. height (int) – The maximum position of this `Disk` on a `Rod`.
Return type:	`Disk`
Raises:	InvalidTowerHeight – The height of the tower is invalid. InvalidDiskPosition – The position of the disk is invalid.

classmethod from_json(d)[source]¶

Return a class instance from a json serializable representation.

Parameters:	d (str\|dict) – The json or decoded-json from which to create a new instance.
Return type:	`Disk`
Raises:	See `Disk.__new__`.

to_json()[source]¶

Return a json serializable representation of this instance.

Return type:	object

validate()[source]¶

Perform self validation

Raises:	InvalidTowerHeight – The height of the tower is invalid. InvalidDiskPosition – The position of the disk is invalid.

width¶

Obtain the width of the disk

Return type:	int