Committee

class cometa.proposal_procedures.committee.Committee(ptr)[source]

Bases: object

Represents the constitutional committee.

The constitutional committee represents a set of individuals or entities (each associated with a pair of Ed25519 credentials) that are collectively responsible for ensuring that the Constitution is respected.

__init__(ptr)[source]

Return type:: None

__enter__()[source]

Return type:: Committee

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

Return type:: None

__repr__()[source]

Return repr(self).

Return type:: str

classmethod new(quorum_threshold)[source]

Creates a new constitutional committee.

Parameters:: quorum_threshold (UnitInterval) – The minimum percentage of committee members required to participate in a vote for it to be valid.
Returns:: A new Committee instance.
Raises:: CardanoError – If creation fails.
Return type:: Committee

classmethod from_cbor(reader)[source]

Deserializes a Committee from CBOR data.

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

to_cbor(writer)[source]

Serializes the committee to CBOR format.

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

property quorum_threshold: UnitInterval

The quorum threshold for the committee.

Returns:: The UnitInterval representing the minimum voting percentage.

members_keys()[source]

Retrieves all member credentials.

Returns:: A CredentialSet containing all committee member credentials.
Raises:: CardanoError – If retrieval fails.
Return type:: CredentialSet

add_member(credential, epoch)[source]

Adds a member to the committee.

Parameters:

credential (Credential) – The credential of the member to add.
epoch (int) – The epoch when the member’s term expires.

Raises:

CardanoError – If addition fails.

Return type:

None

get_member_epoch(credential)[source]

Gets the term epoch for a specific member.

Parameters:: credential (Credential) – The credential of the member to look up.
Returns:: The epoch when the member’s term expires, or 0 if not found.
Return type:: int

get_key_at(index)[source]

Retrieves the credential at a specific index.

Parameters:: index (int) – The index of the credential to retrieve.
Returns:: The Credential at the specified index.
Raises:: CardanoError – If retrieval fails.
Return type:: Credential

get_value_at(index)[source]

Retrieves the term epoch at a specific index.

Parameters:: index (int) – The index of the epoch to retrieve.
Returns:: The term epoch at the specified index.
Raises:: CardanoError – If retrieval fails.
Return type:: int

get_key_value_at(index)[source]

Retrieves the key-value pair at a specific index.

Parameters:: index (int) – The index of the key-value pair to retrieve.
Returns:: A tuple containing the Credential and term epoch at the specified index.
Raises:: CardanoError – If retrieval fails.
Return type:: tuple[Credential, int]

__iter__()[source]

Iterates over all member credentials.

Return type:: Iterator[Credential]

items()[source]

Returns an iterator over (credential, epoch) pairs.

Return type:: Iterator[Tuple[Credential, int]]