Sos1Constraint#

class Sos1Constraint#

A SOS1 (Special Ordered Set type 1) constraint: at most one variable can be non-zero.

This is a structural constraint — no explicit function is stored. Unlike OneHotConstraint, SOS1 allows all variables to be zero.

__copy__() → Sos1Constraint#

__deepcopy__(_memo: Any) → Sos1Constraint#

__new__(variables: Sequence[int], name: Optional[str] = None, subscripts: Sequence[int] = [], description: Optional[str] = None, parameters: Mapping[str, str] = {}) → Sos1Constraint#

Create a new SOS1 constraint.

Args:

variables: List of decision variable IDs (at most one can be non-zero)
name / subscripts / description / parameters: Optional metadata. Drained into the host's SoA store on insertion.

__repr__() → str#

set_description(description: str) → Sos1Constraint#: Set the description. Returns self for method chaining (snapshot mutation).

set_name(name: str) → Sos1Constraint#: Set the name. Returns self for method chaining (snapshot mutation).

set_parameters(parameters: Mapping[str, str]) → Sos1Constraint#: Replace all parameters. Returns self for method chaining (snapshot mutation).

set_subscripts(subscripts: Sequence[int]) → Sos1Constraint#: Set the subscripts. Returns self for method chaining (snapshot mutation).

property description: Optional[str]#: Read-only property.

property name: Optional[str]#: Read-only property.

property parameters: dict[str, str]#: Read-only property.

property subscripts: list[int]#: Read-only property.

property variables: list[int]#: Read-only property.