odoid 1.0.1

Deterministic mixed-radix ID encoding — maps integers to 6, 7, or 8-character alphanumeric strings.

odoid

Deterministic mixed-radix ID encoding. Maps a non-negative integer to a 6, 7, or 8-character alphanumeric string with a serial-number aesthetic.

encode(0,            6)  →  "0A0000"
encode(1234567,      6)  →  "0D7NM7"
encode(1234567,      7)  →  "0A15NM7"
encode(236223201279, 8)  →  "ZZ9ZZZZZ"

Features

• Deterministic — same integer + length always produces the same string, and vice-versa.
• Human-readable — ambiguous characters I, L, O are excluded from all positions.
• Fixed positional structure — position 1 is always a letter, position 2 is always a digit.
• Pure Python — no dependencies, works on Python 3.8+.

Install

pip install odoid

Usage

Encode

from odoid import encode

encode(0, 6)            # "0A0000"
encode(1234567, 6)      # "0D7NM7"
encode(1234567, 7)      # "0A15NM7"
encode(236223201279, 8) # "ZZ9ZZZZZ"

encode(n, length=6) — default length is 6.

Decode

from odoid import decode

decode("0A0000")    # 0
decode("0D7NM7")    # 1234567
decode("0A15NM7")   # 1234567

Returns int. Input is uppercased before lookup, so decode("0d7nm7") is valid.

OdoIDGenerator

from odoid import OdoIDGenerator

g = OdoIDGenerator(namespace="orders", length=7)
result = g.next()
# result.id        → e.g. "3H5NV2K"
# result.n         → the raw integer
# result.length    → 7
# result.namespace → "orders"

Lengths and Capacity

Length	Max integer (exclusive)
6	230,686,720
7	7,381,975,040
8	236,223,201,280

Errors

Error	When
OverflowError	n < 0 or n >= MAX[length]
UnsupportedLengthError	length is not 6, 7, or 8
InvalidCharacterError	character not in positional charset during decode

All three are subclasses of ValueError.

Specification

See SPEC.md for the full processing instruction document.

License

MIT