dimod.QuadraticModel.iter_neighborhood

QuadraticModel.iter_neighborhood(v: Hashable) → Iterator[Tuple[Hashable, Union[float, numpy.floating, numpy.integer]]]

Iterate over the neighbors and quadratic biases of a variable.

Parameters

v – Variable in the quadratic model.

Returns

Neighbors of the specified variable and their quadratic biases.

Examples

>>> from dimod import QuadraticModel
>>> qm = QuadraticModel()
>>> qm.add_variables_from('BINARY', ['x', 'y', 'z'])
>>> qm.add_quadratic('x', 'y', -2)
>>> qm.add_quadratic('x', 'z', 2)
>>> list(qm.iter_neighborhood('x'))
[('y', -2.0), ('z', 2.0)]