ewokscore.hashing.UniversalHashable

class ewokscore.hashing.UniversalHashable(pre_uhash=None, instance_nonce=None)

Bases: HasUhash

The universal hash of an instance of this class is based on:

• pre-uhash

• instance nonce (if any)

The universal hash is equal to the pre-hash when an instance nonce is not provided.

The pre-uhash is either provided or based on:

• data

• class nonce (class qualifier name, class version, superclass nonce)

Parameters:

• pre_uhash (Union[str, bytes, UniversalHash, HasUhash, None]) –

• instance_nonce (Optional[Any]) –

MISSING_DATA = <MISSING_DATA>

classmethod class_nonce()

classmethod class_nonce_data()

cleanup_references()

Remove all references to other hashables. Side effect: fixes the uhash when it depends on another hashable.

fix_uhash()

Fix the uhash when it is derived from the uhash data.

get_uhash_init(serialize=False)

instance_nonce()

set_uhash_init(pre_uhash=None, instance_nonce=None)

Parameters:

• pre_uhash (Union[str, bytes, UniversalHash, HasUhash, None]) –

• instance_nonce (Optional[Any]) –

property uhash: UniversalHash | None

uhash_randomize()

undo_fix_uhash()

undo_randomize()