pystra.system.CutSetSystem

class CutSetSystem(cut_sets, components=None, name=None)

Bases: System

A system described by cut sets.

Each cut set is a group of component failures that causes system failure. The system fails when any cut set has fully failed.

Parameters:

• cut_sets (iterable of iterables) – Cut sets. Entries may be components, subsystems, callables, or string names when components is supplied.

• components (mapping or iterable, optional) – Component catalogue used to resolve string names in cut_sets.

• name (str, optional) – System name.

Methods

as_limit_state	Return the composed system as a Pystra LimitState.
component_failure_masks	Return failure masks for each leaf component.
component_values	Evaluate all leaf component limit states.
evaluate	Evaluate the equivalent scalar system limit state.
failure_mask	Return a boolean mask where the system is failed.
getLimitState	Return the composed system as a Pystra LimitState.
iter_components	Yield all leaf components in the system.

as_limit_state()

Return the composed system as a Pystra LimitState.

component_failure_masks(**kwargs)

Return failure masks for each leaf component.

component_values(**kwargs)

Evaluate all leaf component limit states.

Returns:

Mapping component names to their evaluated limit-state values.

Return type:

dict

Raises:

ValueError – If duplicate component names would make the mapping ambiguous.

property components

Flat tuple of all leaf components in the system.

evaluate(**kwargs)

Evaluate the equivalent scalar system limit state.

failure_mask(**kwargs)

Return a boolean mask where the system is failed.

getLimitState()

Return the composed system as a Pystra LimitState.

This legacy-style alias mirrors the existing Pystra getter naming.

iter_components()

Yield all leaf components in the system.