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gh-156289: Update Unicode to 18.0.0 #156290

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6de6ffd
Update Unicode database to 18.0.0
clin1234 Aug 23, 2026
c6df4fc
📜🤖 Added by blurb_it.
blurb-it[bot] Aug 23, 2026
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2 changes: 1 addition & 1 deletion Doc/library/re.rst
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Expand Up @@ -614,7 +614,7 @@ character ``'$'``.

Matches ``[0-9]`` if the :py:const:`~re.ASCII` flag is used.

__ https://www.unicode.org/versions/Unicode17.0.0/core-spec/chapter-4/#G124142
__ https://www.unicode.org/versions/Unicode18.0.0/core-spec/chapter-4/#G124142

For 8-bit (bytes) patterns:
Matches any decimal digit in the ASCII character set;
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8 changes: 4 additions & 4 deletions Doc/library/stdtypes.rst
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Expand Up @@ -1881,7 +1881,7 @@ expression support in the :mod:`re` module).

The casefolding algorithm is `described in section 3.13.3 'Default Case
Folding' of the Unicode Standard
<https://www.unicode.org/versions/Unicode17.0.0/core-spec/chapter-3/#G53253>`__.
<https://www.unicode.org/versions/Unicode18.0.0/core-spec/chapter-3/#G53253>`__.

.. versionadded:: 3.3

Expand Down Expand Up @@ -2122,7 +2122,7 @@ expression support in the :mod:`re` module).
property being one of "Lm", "Lt", "Lu", "Ll", or "Lo". Note that this is different
from the `Alphabetic property defined in section 4.10 'Letters, Alphabetic, and
Ideographic' of the Unicode Standard
<https://www.unicode.org/versions/Unicode17.0.0/core-spec/chapter-4/#G91002>`__.
<https://www.unicode.org/versions/Unicode18.0.0/core-spec/chapter-4/#G91002>`__.
For example:

.. doctest::
Expand Down Expand Up @@ -2388,7 +2388,7 @@ expression support in the :mod:`re` module).

The lowercasing algorithm used is `described in section 3.13.2 'Default Case
Conversion' of the Unicode Standard
<https://www.unicode.org/versions/Unicode17.0.0/core-spec/chapter-3/#G34078>`__.
<https://www.unicode.org/versions/Unicode18.0.0/core-spec/chapter-3/#G34078>`__.


.. method:: str.lstrip(chars=None, /)
Expand Down Expand Up @@ -2900,7 +2900,7 @@ expression support in the :mod:`re` module).

The uppercasing algorithm used is `described in section 3.13.2 'Default Case
Conversion' of the Unicode Standard
<https://www.unicode.org/versions/Unicode17.0.0/core-spec/chapter-3/#G34078>`__.
<https://www.unicode.org/versions/Unicode18.0.0/core-spec/chapter-3/#G34078>`__.


.. method:: str.zfill(width, /)
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10 changes: 5 additions & 5 deletions Doc/library/unicodedata.rst
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Expand Up @@ -13,8 +13,8 @@

This module provides access to the Unicode Character Database (UCD) which
defines character properties for all Unicode characters. The data contained in
this database is compiled from the `UCD version 17.0.0
<https://www.unicode.org/Public/17.0.0/ucd>`_.
this database is compiled from the `UCD version 18.0.0
<https://www.unicode.org/Public/18.0.0/ucd>`_.

The module uses the same names and symbols as defined by Unicode
Standard Annex #44, `"Unicode Character Database"
Expand Down Expand Up @@ -170,7 +170,7 @@ Standard Annex #44, `"Unicode Character Database"
.. function:: block(chr, /)

Returns the `block
<https://www.unicode.org/versions/Unicode17.0.0/core-spec/chapter-3/#G64189>`_
<https://www.unicode.org/versions/Unicode18.0.0/core-spec/chapter-3/#G64189>`_
assigned to the character *chr*. For example::

>>> unicodedata.block('S')
Expand Down Expand Up @@ -326,6 +326,6 @@ In addition, the module exposes the following constants:

.. rubric:: Footnotes

.. [#] https://www.unicode.org/Public/17.0.0/ucd/NameAliases.txt
.. [#] https://www.unicode.org/Public/18.0.0/ucd/NameAliases.txt

.. [#] https://www.unicode.org/Public/17.0.0/ucd/NamedSequences.txt
.. [#] https://www.unicode.org/Public/18.0.0/ucd/NamedSequences.txt
6 changes: 3 additions & 3 deletions Doc/reference/lexical_analysis.rst
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Expand Up @@ -602,8 +602,8 @@ Unicode categories use the version of the Unicode Character Database as
included in the :mod:`unicodedata` module.

.. _UAX-31: https://www.unicode.org/reports/tr31/
.. _PropList.txt: https://www.unicode.org/Public/17.0.0/ucd/PropList.txt
.. _DerivedCoreProperties.txt: https://www.unicode.org/Public/17.0.0/ucd/DerivedCoreProperties.txt
.. _PropList.txt: https://www.unicode.org/Public/18.0.0/ucd/PropList.txt
.. _DerivedCoreProperties.txt: https://www.unicode.org/Public/18.0.0/ucd/DerivedCoreProperties.txt
.. _normalization form: https://www.unicode.org/reports/tr15/#Norm_Forms

.. seealso::
Expand Down Expand Up @@ -916,7 +916,7 @@ with the given *name*::
This sequence cannot appear in :ref:`bytes literals <bytes-literal>`.

.. versionchanged:: 3.3
Support for `name aliases <https://www.unicode.org/Public/17.0.0/ucd/NameAliases.txt>`__
Support for `name aliases <https://www.unicode.org/Public/18.0.0/ucd/NameAliases.txt>`__
has been added.

.. _string-escape-long-hex:
Expand Down
6 changes: 3 additions & 3 deletions Lib/re/_properties.py
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Expand Up @@ -100,7 +100,7 @@
# CATEGORY_DIGIT matches Nd (but, like \d, is restricted to ASCII under the
# ASCII flag). The gc group memberships (L = Lu|Ll|Lt|Lm|Lo, N = Nd|Nl|No)
# are given by the Unicode Standard 4.5, Table 4-4 "General_Category Values"
# (https://www.unicode.org/versions/Unicode17.0.0/core-spec/chapter-4/#G124142)
# (https://www.unicode.org/versions/Unicode18.0.0/core-spec/chapter-4/#G124142)
# and listed in
# https://www.unicode.org/Public/UCD/latest/ucd/PropertyValueAliases.txt
# The compound categories Lu, N, Lm, Nl, No, Cf, Z, Zs, C and Cn are
Expand All @@ -127,7 +127,7 @@
# (private use) and the single code points Zl and Zp. Cc, Cs and Co are the
# control codes, surrogate and private-use areas, fixed by the Unicode
# Standard 23.1, 23.6 and 23.5:
# https://www.unicode.org/versions/Unicode17.0.0/core-spec/chapter-23/
# https://www.unicode.org/versions/Unicode18.0.0/core-spec/chapter-23/
# All five are listed in
# https://www.unicode.org/Public/UCD/latest/ucd/extracted/DerivedGeneralCategory.txt
_CC_RANGES = [(0x00, 0x1F), (0x7F, 0x9F)]
Expand Down Expand Up @@ -174,7 +174,7 @@ def _analytic_ranges():
# normalised.
# Noncharacter_Code_Point: U+FDD0..FDEF and the last two of every plane,
# permanently reserved (the Unicode Standard 23.7, "Noncharacters":
# https://www.unicode.org/versions/Unicode17.0.0/core-spec/chapter-23/).
# https://www.unicode.org/versions/Unicode18.0.0/core-spec/chapter-23/).
noncharacter = [(0xFDD0, 0xFDEF)]
noncharacter += [(plane | 0xFFFE, plane | 0xFFFF)
for plane in range(0, MAXUNICODE + 1, 0x10000)]
Expand Down
2 changes: 1 addition & 1 deletion Lib/stringprep.py
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Expand Up @@ -9,7 +9,7 @@
# when unicodedata is modified to ensure conformant behavior.
import unicodedata

assert unicodedata.unidata_version == '17.0.0'
assert unicodedata.unidata_version == '18.0.0'

from unicodedata import ucd_3_2_0 as unicodedata_320

Expand Down
1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Library/2026-08-23-14-23-40.gh-issue-156289.YFwnPi.rst
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@@ -0,0 +1 @@
Update Unicode to 18.0.0
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