Contract

class negmas.situated.Contract(agreement=NOTHING, partners=NOTHING, annotation=NOTHING, issues=NOTHING, signed_at=-1, executed_at=-1, concluded_at=-1, nullified_at=-1, to_be_signed_at=-1, signatures=NOTHING, mechanism_state=None, mechanism_id=None, id=NOTHING)[source]

Bases: object

A agreement definition which encapsulates an agreement with partners and extra information

Attributes Summary

`agreement`	The actual agreement of the negotiation in the form of an `Outcome` in the `Issue` space defined by `issues`
`annotation`	Misc.
`concluded_at`	The time-step at which the contract was concluded (but it is still not binding until signed)
`executed_at`	The time-step at which the contract was executed/breached
`id`	Object name
`issues`	Issues of the negotiations from which this agreement was concluded.
`mechanism_id`	The Id of the mechanism that led to this contract
`mechanism_state`	The mechanism state at the contract conclusion
`nullified_at`	The time-step at which the contract was nullified after being signed.
`partners`	The partners
`signatures`	A mapping from each agent to its signature
`signed_at`	The time-step at which the contract was signed
`to_be_signed_at`	The time-step at which the contract should be signed

Attributes Documentation

agreement: dict[str, Any]: The actual agreement of the negotiation in the form of an Outcome in the Issue space defined by issues

annotation: dict[str, Any]: Misc. information to be kept with the agreement.

concluded_at: int: The time-step at which the contract was concluded (but it is still not binding until signed)

executed_at: int: The time-step at which the contract was executed/breached

id: str: Object name

issues: tuple[Issue]: Issues of the negotiations from which this agreement was concluded. It may be empty

mechanism_id: str | None: The Id of the mechanism that led to this contract

mechanism_state: MechanismState | None: The mechanism state at the contract conclusion

nullified_at: int: The time-step at which the contract was nullified after being signed. That can happen if a partner declares bankruptcy

partners: tuple[str]: The partners

signatures: dict[str, str | None]: A mapping from each agent to its signature

signed_at: int: The time-step at which the contract was signed

to_be_signed_at: int: The time-step at which the contract should be signed