`re` should support `\p{...}` character properties

[LonYui]

Feature or enhancement

Reproduced steps

re.compile('\p{script=Han}') # 

actual:
will throw error
expect:
pass

Info:

• p stand for properity , Han stand for mandarin
• what is p? http://unicode.org/reports/tr18/#Categories

changed log
8/3 add more info . Final thx @JelleZijlstra give an helpful link

Linked PRs

• gh-95555: Support Unicode property escapes \p{...} in regular expressions #151969

[JelleZijlstra]

Could you clarify why you think this should work? As far as I can tell \p has no special meaning in regex.

[ronaldoussoren]

They may mean character properties as described here: https://www.unicode.org/reports/tr18/#property_syntax

Perl has similar functionality.

[mrabarnett]

Unicode properties are supported in the 'regex' package on PyPI here: https://pypi.org/project/regex/

[corona10]

@LonYui

re: 應該支援漢字正則表達式 \p{Han}

Please write the issue title in English if possible, some of the core devs are not familiar with Chinese.
(Same reason why I do not write issue titles in Korean.)
For reducing the cost of understanding your suggestion, I re-wrote the issue title in English.

[arhadthedev]

Removing the pending label because @ronaldoussoren explained what the OP means.

[arhadthedev]

Note: currently re supports only \number, \a, \b, \f, \n, \N, \r, \t, \u, \U, \v, \x, and \\.

[ncoghlan]

As a concrete example where this limitation can cause problems: while JSON Schema formally only supports a limited number of escape sequences, in practice schemas may end up containing patterns that use any of the defined JavaScript regex character classes.

Python supports most of the same character classes, but \p/\P is a notable omission. Whether or not that can reasonably be worked around by using regex instead of re depends on how the affected regex is being processed (if it's in a third party library, it may not be straightforward to get it to use a different regex engine)