UUID v7

import datetime

def analyze(s: str):
    s = s.replace("-", "")
    print("Hex form:", s)

    n = int.from_bytes(bytes.fromhex(s), "big")

    version = (n >> (9 * 8 + 4)) & 0x0F
    print("Version:", version)

    variant = (n >> (7 * 8 + 6)) & 0x2
    print("Variant:", variant)

    millis = (n >> (10 * 8))
    print("Timestamp:", millis // 1000)

    dt = datetime.datetime.fromtimestamp(millis / 1000)
    print("Datetime:", dt.isoformat())

    random_a = (n >> (8 * 8)) & 0xFFF
    print("Random A:", random_a, hex(random_a).zfill(3))

    random_b = n & 0x3fffffffffffffff
    print("Random B:", random_b, hex(random_b).zfill(16))



def test(desc, uuid):
    print(desc)
    analyze(uuid)
    print()

test("UUID v7 Example", "018c69b4-0be1-7530-8693-266ca9016c48")

test("Leo's UUID v7", "018c69e5-a66d-7000-836f-14a4ea4b106d")

test("UUID v4 Example", "ca9a0f58-76d5-4f45-8c0e-a2d8b2f24234")

test("RFC UUID v7 Example", "017F22E2-79B0-7CC3-98C4-DC0C0C07398F")

UUID v7 Example
Hex form: 018c69b40be175308693266ca9016c48
Version: 7
Variant: 2
Timestamp: 1702580456
Datetime: 2023-12-14T22:00:56.417000
Random A: 1328 0x530
Random B: 473764633937800264 0x693266ca9016c48

Leo's UUID v7
Hex form: 018c69e5a66d7000836f14a4ea4b106d
Version: 7
Variant: 2
Timestamp: 1702583707
Datetime: 2023-12-14T22:55:07.245000
Random A: 0 0x0
Random B: 247439203066646637 0x36f14a4ea4b106d

UUID v4 Example
Hex form: ca9a0f5876d54f458c0ea2d8b2f24234
Version: 4
Variant: 2
Timestamp: 222763031230
Datetime: 9029-01-29T22:47:10.165009
Random A: 3909 0xf45
Random B: 868810829727941172 0xc0ea2d8b2f24234

RFC UUID v7 Example
Hex form: 017F22E279B07CC398C4DC0C0C07398F
Version: 7
Variant: 2
Timestamp: 1645557742
Datetime: 2022-02-22T22:22:22
Random A: 3267 0xcc3
Random B: 1784793296645077391 0x18c4dc0c0c07398f