mnemosine.ids.ulid

Kind: function

Signature

ulid() -> str

Documentation

Return a new 26-char ULID.

The first 10 characters encode the current Unix time in milliseconds (48 bits) and the remaining 16 characters encode 80 bits of randomness generated via the CSPRNG secrets module. Because the timestamp comes first, ULIDs sort lexicographically in creation order.

Returns:

• str: A 26-character Crockford base32 ULID.

Raises:

• NotImplementedError: If the platform's secrets/os.urandom
• cannot provide cryptographic randomness.

Example:

>>> from mnemosine.ids import ulid
>>> a, b = ulid(), ulid()
>>> len(a) == 26 and a != b
True