autowisp.light_curves.hashable_array module

Class Inheritance Diagram

Define a Hashable wrapper for ndarray objects.

class autowisp.light_curves.hashable_array.HashableArray(wrapped, tight=False)

Bases: object

Hashable wrapper for ndarray objects

Copied from: http://stackoverflow.com/questions/1939228/constructing-a-python-set-from-a-numpy-matrix

Instances of ndarray are not hashable, meaning they cannot be added to sets, nor used as keys in dictionaries. This is by design - ndarray objects are mutable, and therefore cannot reliably implement the __hash__() method.

The hashable class allows a way around this limitation. It implements the required methods for hashable objects in terms of an encapsulated ndarray object. This can be either a copied instance (which is safer) or the original object (which requires the user to be careful enough not to modify it).

__init__(wrapped, tight=False)

Creates a new hashable object encapsulating an ndarray.

Parameters:

• wrapped (-) – The wrapped ndarray.

• tight (-) – If True, a copy of the input ndaray is created.

unwrap()

Return the encapsulated ndarray.

If the wrapper is “tight”, a copy of the encapsulated ndarray is returned. Otherwise, the encapsulated ndarray itself is returned.