ProtocolParamUpdate

class cometa.protocol_params.protocol_param_update.ProtocolParamUpdate(ptr)[source]

Bases: object

Represents a proposed update to the protocol parameters.

Unlike ProtocolParameters, this class allows optional values since an update proposal may only change specific parameters while leaving others unchanged.

__init__(ptr)[source]

Return type:: None

__enter__()[source]

Return type:: ProtocolParamUpdate

__exit__(exc_type, exc_val, exc_tb)[source]

Return type:: None

__repr__()[source]

Return repr(self).

Return type:: str

classmethod new()[source]

Creates a new empty ProtocolParamUpdate instance.

Returns:: A new ProtocolParamUpdate instance.
Raises:: CardanoError – If creation fails.
Return type:: ProtocolParamUpdate

classmethod from_cbor(reader)[source]

Deserializes ProtocolParamUpdate from CBOR data.

Parameters:: reader (CborReader) – A CborReader positioned at the update data.
Returns:: A new ProtocolParamUpdate deserialized from the CBOR data.
Raises:: CardanoError – If deserialization fails.
Return type:: ProtocolParamUpdate

to_cbor(writer)[source]

Serializes the protocol param update to CBOR format.

Parameters:: writer (CborWriter) – A CborWriter to write the serialized data to.
Raises:: CardanoError – If serialization fails.
Return type:: None

property min_fee_a: int | None: Linear fee coefficient (a) for transaction fees.

property min_fee_b: int | None: Constant fee coefficient (b) for transaction fees.

property max_block_body_size: int | None: Maximum block body size in bytes.

property max_tx_size: int | None: Maximum transaction size in bytes.

property max_block_header_size: int | None: Maximum block header size in bytes.

property key_deposit: int | None: Staking key registration deposit in lovelaces.

property pool_deposit: int | None: Stake pool registration deposit in lovelaces.

property max_epoch: int | None: Maximum pool retirement epoch bounds.

property n_opt: int | None: Desired number of stake pools (k parameter).

property pool_pledge_influence: UnitInterval | None: Pool pledge influence factor (a0).

property expansion_rate: UnitInterval | None: Monetary expansion rate (rho).

property treasury_growth_rate: UnitInterval | None: Treasury growth rate (tau).

property d: UnitInterval | None: Decentralization parameter (deprecated in Babbage).

property extra_entropy: Buffer | None: Extra entropy for leader selection (deprecated).

property protocol_version: ProtocolVersion | None: Current protocol version.

property min_pool_cost: int | None: Minimum pool cost in lovelaces.

property ada_per_utxo_byte: int | None: Lovelaces per UTXO byte (coins per UTxO word).

property cost_models: Costmdls | None: Cost models for Plutus script execution.

property execution_costs: ExUnitPrices | None: Execution unit prices for Plutus scripts.

property max_tx_ex_units: ExUnits | None: Maximum execution units per transaction.

property max_block_ex_units: ExUnits | None: Maximum execution units per block.

property max_value_size: int | None: Maximum value size in bytes.

property collateral_percentage: int | None: Collateral percentage required for Plutus scripts.

property max_collateral_inputs: int | None: Maximum number of collateral inputs.

property pool_voting_thresholds: PoolVotingThresholds | None: Voting thresholds for stake pool operators.

property drep_voting_thresholds: DRepVotingThresholds | None: Voting thresholds for DReps.

property min_committee_size: int | None: Minimum constitutional committee size.

property committee_term_limit: int | None: Committee member term limit in epochs.

property governance_action_validity_period: int | None: Governance action validity period in epochs.

property governance_action_deposit: int | None: Governance action deposit in lovelaces.

property drep_deposit: int | None: DRep registration deposit in lovelaces.

property drep_inactivity_period: int | None: DRep inactivity period in epochs.

property ref_script_cost_per_byte: UnitInterval | None: Reference script cost per byte.

to_cip116_json(writer)[source]

Serializes this object to CIP-116 compliant JSON.

Parameters:: writer (JsonWriter) – The JsonWriter to write the JSON to.
Raises:: CardanoError – If serialization fails.
Return type:: None