sum

VarDict1D.sum()

Sum all variables in an expression.

Returns:

highspy.highs_linear_expression

Examples

Create highspy model:

>>> from highspy import Highs, HighsVarType
>>> mdl = Highs()

Create index-set:

>>> nodes = IndexSet1D(['A', 'B', 'C'], name='node')

Add variables:

>>> from opti_extensions.highspy import addVariables
>>> node_select = addVariables(
...     mdl, nodes, type=HighsVarType.kInteger, lb=0, ub=1, name_prefix='node-select_'
... )

Sum all variables:

>>> node_select.sum()
1.0_v0  1.0_v1  1.0_v2