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Created on 2022-01-17 12:31 by jirkamarsik, last changed 2022-04-11 14:59 by admin.
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| msg410770 - (view) | Author: Jirka Marsik (jirkamarsik) | Date: 2022-01-17 12:31 | |
re.compile(r"\N{name of Unicode Named Character Sequence}"), e.g. re.compile(r"\N{KEYCAP NUMBER SIGN}"), throws a TypeError. The regular expression parser relies on 'unicodedata' to lookup character names. The 'unicodedata' module recently added support for Unicode Named Character Sequences (https://www.unicode.org/Public/13.0.0/ucd/NamedSequences.txt). Trying to use these named character sequences in a regular expression leads to a 'TypeError', as the regexp parser tries to call 'ord' on a string with length > 1.
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| msg410874 - (view) | Author: Matthew Barnett (mrabarnett) *  |
Date: 2022-01-18 15:52 | |
They're not supported in string literals either:
Python 3.10.1 (tags/v3.10.1:2cd268a, Dec 6 2021, 19:10:37) [MSC v.1929 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> "\N{KEYCAP NUMBER SIGN}"
File "<stdin>", line 1
"\N{KEYCAP NUMBER SIGN}"
^
SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 0-21: unknown Unicode character name
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| msg415540 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) *  |
Date: 2022-03-19 11:22 | |
>>> import unicodedata
>>> unicodedata.lookup('KEYCAP NUMBER SIGN')
'#️'
>>> print(ascii(unicodedata.lookup('KEYCAP NUMBER SIGN')))
'#\ufe0f\u20e3'
Support of Unicode Named Character Sequences in the unicodeescape codec and in the RE parser would be a new feature.
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:54 | admin | set | github: 90568 |
| 2022-03-19 11:22:19 | serhiy.storchaka | set | versions:
+ Python 3.11, - Python 3.10 nosy: + vstinner, serhiy.storchaka messages: + msg415540 components: + Interpreter Core, Unicode type: behavior -> enhancement |
| 2022-01-18 15:52:03 | mrabarnett | set | messages: + msg410874 |
| 2022-01-17 12:31:30 | jirkamarsik | create | |