GeezerVison is showing github.com — gh-137847: Add typical usage for uuid 6,7,8 in `/lib/uuid.py` by LamentXU123 · Pull Request #137801 · python/cpython
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LamentXU123
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Aug 15, 2025
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edited by bedevere-app
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Before we've got some typical usage in the very beginning of uuid.py
r"""UUID objects (universally unique identifiers) according to RFC 4122/9562.
This module provides immutable UUID objects (class UUID) and functions for
generating UUIDs corresponding to a specific UUID version as specified in
RFC 4122/9562, e.g., uuid1() for UUID version 1, uuid3() for UUID version 3,
and so on.
Note that UUID version 2 is deliberately omitted as it is outside the scope
of the RFC.
If all you want is a unique ID, you should probably call uuid1() or uuid4().
Note that uuid1() may compromise privacy since it creates a UUID containing
the computer's network address. uuid4() creates a random UUID.
Typical usage:
>>> import uuid
# make a UUID based on the host ID and current time
>>> uuid.uuid1() # doctest: +SKIP
UUID('a8098c1a-f86e-11da-bd1a-00112444be1e')
# make a UUID using an MD5 hash of a namespace UUID and a name
>>> uuid.uuid3(uuid.NAMESPACE_DNS, 'python.org')
UUID('6fa459ea-ee8a-3ca4-894e-db77e160355e')
# make a random UUID
>>> uuid.uuid4() # doctest: +SKIP
UUID('16fd2706-8baf-433b-82eb-8c7fada847da')
# make a UUID using a SHA-1 hash of a namespace UUID and a name
>>> uuid.uuid5(uuid.NAMESPACE_DNS, 'python.org')
UUID('886313e1-3b8a-5372-9b90-0c9aee199e5d')
# make a UUID from a string of hex digits (braces and hyphens ignored)
>>> x = uuid.UUID('{00010203-0405-0607-0809-0a0b0c0d0e0f}')
# convert a UUID to a string of hex digits in standard form
>>> str(x)
'00010203-0405-0607-0809-0a0b0c0d0e0f'
# get the raw 16 bytes of the UUID
>>> x.bytes
b'\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f'
# make a UUID from a 16-byte string
>>> uuid.UUID(bytes=x.bytes)
UUID('00010203-0405-0607-0809-0a0b0c0d0e0f')
# get the Nil UUID
>>> uuid.NIL
UUID('00000000-0000-0000-0000-000000000000')
# get the Max UUID
>>> uuid.MAX
UUID('ffffffff-ffff-ffff-ffff-ffffffffffff')
"""
but the typical usage stops at uuid5. This PR add more for newly uuids (6, 7, 8)
I'm using the old issue here XD.
skipping news.
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I don't think we really need to really expand the docstring. I'm more interested in having it online instead. Also, could you open a separate issue for this? (namely updating the rst and possible the py file) keeping the now-closed issue would be too much now.
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LamentXU123
changed the title
gh-89083: Add typical usage for uuid 6,7,8 in /lib/uuid.py
gh-137847: Add typical usage for uuid 6,7,8 in /lib/uuid.py
Aug 16, 2025
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