Bloc Unicode d'un caractère en python

Question

Existe-t-il un moyen d'obtenir le bloc Unicode d'un caractère en python? Le module unicodedata ne semble pas avoir ce dont j'ai besoin, et je n'ai pas trouvé de bibliothèque externe pour cela.

Fondamentalement, j'ai besoin de la même fonctionnalité que Character.UnicodeBlock.of() en Java.

Answer 1

Je n'en ai pas trouvé non plus. Étrange!

Heureusement, le nombre de blocs Unicode est relativement faible.

Cette implémentation accepte une chaîne Unicode à un caractère, tout comme les fonctions de unicodedata. Si vos entrées sont principalement ASCII, cette recherche linéaire peut même être plus rapide que la recherche binaire en utilisant bisect ou autre. Si je soumets cela pour l'inclusion dans la bibliothèque standard de Python, je serais probablement écrire comme une recherche binaire par un tableau de statiquement initialisées struct s en C.

def block(ch): 
    ''' 
    Return the Unicode block name for ch, or None if ch has no block. 

    >>> block(u'a') 
    'Basic Latin' 
    >>> block(unichr(0x0b80)) 
    'Tamil' 
    >>> block(unichr(0xe0080)) 

    ''' 

    assert isinstance(ch, unicode) and len(ch) == 1, repr(ch) 
    cp = ord(ch) 
    for start, end, name in _blocks: 
    if start <= cp <= end: 
     return name 

def _initBlocks(text): 
    global _blocks 
    _blocks = [] 
    import re 
    pattern = re.compile(r'([0-9A-F]+)\.\.([0-9A-F]+);\ (\S.*\S)') 
    for line in text.splitlines(): 
    m = pattern.match(line) 
    if m: 
     start, end, name = m.groups() 
     _blocks.append((int(start, 16), int(end, 16), name)) 

# retrieved from http://unicode.org/Public/UNIDATA/Blocks.txt 
_initBlocks(''' 
# Blocks-5.1.0.txt 
# Date: 2008-03-20, 17:41:00 PDT [KW] 
# 
# Unicode Character Database 
# Copyright (c) 1991-2008 Unicode, Inc. 
# For terms of use, see http://www.unicode.org/terms_of_use.html 
# For documentation, see UCD.html 
# 
# Note: The casing of block names is not normative. 
#   For example, "Basic Latin" and "BASIC LATIN" are equivalent. 
# 
# Format: 
# Start Code..End Code; Block Name 

# ================================================ 

# Note: When comparing block names, casing, whitespace, hyphens, 
#   and underbars are ignored. 
#   For example, "Latin Extended-A" and "latin extended a" are equivalent. 
#   For more information on the comparison of property values, 
#   see UCD.html. 
# 
# All code points not explicitly listed for Block 
# have the value No_Block. 

# Property: Block 
# 
# @missing: 0000..10FFFF; No_Block 

0000..007F; Basic Latin 
0080..00FF; Latin-1 Supplement 
0100..017F; Latin Extended-A 
0180..024F; Latin Extended-B 
0250..02AF; IPA Extensions 
02B0..02FF; Spacing Modifier Letters 
0300..036F; Combining Diacritical Marks 
0370..03FF; Greek and Coptic 
0400..04FF; Cyrillic 
0500..052F; Cyrillic Supplement 
0530..058F; Armenian 
0590..05FF; Hebrew 
0600..06FF; Arabic 
0700..074F; Syriac 
0750..077F; Arabic Supplement 
0780..07BF; Thaana 
07C0..07FF; NKo 
0900..097F; Devanagari 
0980..09FF; Bengali 
0A00..0A7F; Gurmukhi 
0A80..0AFF; Gujarati 
0B00..0B7F; Oriya 
0B80..0BFF; Tamil 
0C00..0C7F; Telugu 
0C80..0CFF; Kannada 
0D00..0D7F; Malayalam 
0D80..0DFF; Sinhala 
0E00..0E7F; Thai 
0E80..0EFF; Lao 
0F00..0FFF; Tibetan 
1000..109F; Myanmar 
10A0..10FF; Georgian 
1100..11FF; Hangul Jamo 
1200..137F; Ethiopic 
1380..139F; Ethiopic Supplement 
13A0..13FF; Cherokee 
1400..167F; Unified Canadian Aboriginal Syllabics 
1680..169F; Ogham 
16A0..16FF; Runic 
1700..171F; Tagalog 
1720..173F; Hanunoo 
1740..175F; Buhid 
1760..177F; Tagbanwa 
1780..17FF; Khmer 
1800..18AF; Mongolian 
1900..194F; Limbu 
1950..197F; Tai Le 
1980..19DF; New Tai Lue 
19E0..19FF; Khmer Symbols 
1A00..1A1F; Buginese 
1B00..1B7F; Balinese 
1B80..1BBF; Sundanese 
1C00..1C4F; Lepcha 
1C50..1C7F; Ol Chiki 
1D00..1D7F; Phonetic Extensions 
1D80..1DBF; Phonetic Extensions Supplement 
1DC0..1DFF; Combining Diacritical Marks Supplement 
1E00..1EFF; Latin Extended Additional 
1F00..1FFF; Greek Extended 
2000..206F; General Punctuation 
2070..209F; Superscripts and Subscripts 
20A0..20CF; Currency Symbols 
20D0..20FF; Combining Diacritical Marks for Symbols 
2100..214F; Letterlike Symbols 
2150..218F; Number Forms 
2190..21FF; Arrows 
2200..22FF; Mathematical Operators 
2300..23FF; Miscellaneous Technical 
2400..243F; Control Pictures 
2440..245F; Optical Character Recognition 
2460..24FF; Enclosed Alphanumerics 
2500..257F; Box Drawing 
2580..259F; Block Elements 
25A0..25FF; Geometric Shapes 
2600..26FF; Miscellaneous Symbols 
2700..27BF; Dingbats 
27C0..27EF; Miscellaneous Mathematical Symbols-A 
27F0..27FF; Supplemental Arrows-A 
2800..28FF; Braille Patterns 
2900..297F; Supplemental Arrows-B 
2980..29FF; Miscellaneous Mathematical Symbols-B 
2A00..2AFF; Supplemental Mathematical Operators 
2B00..2BFF; Miscellaneous Symbols and Arrows 
2C00..2C5F; Glagolitic 
2C60..2C7F; Latin Extended-C 
2C80..2CFF; Coptic 
2D00..2D2F; Georgian Supplement 
2D30..2D7F; Tifinagh 
2D80..2DDF; Ethiopic Extended 
2DE0..2DFF; Cyrillic Extended-A 
2E00..2E7F; Supplemental Punctuation 
2E80..2EFF; CJK Radicals Supplement 
2F00..2FDF; Kangxi Radicals 
2FF0..2FFF; Ideographic Description Characters 
3000..303F; CJK Symbols and Punctuation 
3040..309F; Hiragana 
30A0..30FF; Katakana 
3100..312F; Bopomofo 
3130..318F; Hangul Compatibility Jamo 
3190..319F; Kanbun 
31A0..31BF; Bopomofo Extended 
31C0..31EF; CJK Strokes 
31F0..31FF; Katakana Phonetic Extensions 
3200..32FF; Enclosed CJK Letters and Months 
3300..33FF; CJK Compatibility 
3400..4DBF; CJK Unified Ideographs Extension A 
4DC0..4DFF; Yijing Hexagram Symbols 
4E00..9FFF; CJK Unified Ideographs 
A000..A48F; Yi Syllables 
A490..A4CF; Yi Radicals 
A500..A63F; Vai 
A640..A69F; Cyrillic Extended-B 
A700..A71F; Modifier Tone Letters 
A720..A7FF; Latin Extended-D 
A800..A82F; Syloti Nagri 
A840..A87F; Phags-pa 
A880..A8DF; Saurashtra 
A900..A92F; Kayah Li 
A930..A95F; Rejang 
AA00..AA5F; Cham 
AC00..D7AF; Hangul Syllables 
D800..DB7F; High Surrogates 
DB80..DBFF; High Private Use Surrogates 
DC00..DFFF; Low Surrogates 
E000..F8FF; Private Use Area 
F900..FAFF; CJK Compatibility Ideographs 
FB00..FB4F; Alphabetic Presentation Forms 
FB50..FDFF; Arabic Presentation Forms-A 
FE00..FE0F; Variation Selectors 
FE10..FE1F; Vertical Forms 
FE20..FE2F; Combining Half Marks 
FE30..FE4F; CJK Compatibility Forms 
FE50..FE6F; Small Form Variants 
FE70..FEFF; Arabic Presentation Forms-B 
FF00..FFEF; Halfwidth and Fullwidth Forms 
FFF0..FFFF; Specials 
10000..1007F; Linear B Syllabary 
10080..100FF; Linear B Ideograms 
10100..1013F; Aegean Numbers 
10140..1018F; Ancient Greek Numbers 
10190..101CF; Ancient Symbols 
101D0..101FF; Phaistos Disc 
10280..1029F; Lycian 
102A0..102DF; Carian 
10300..1032F; Old Italic 
10330..1034F; Gothic 
10380..1039F; Ugaritic 
103A0..103DF; Old Persian 
10400..1044F; Deseret 
10450..1047F; Shavian 
10480..104AF; Osmanya 
10800..1083F; Cypriot Syllabary 
10900..1091F; Phoenician 
10920..1093F; Lydian 
10A00..10A5F; Kharoshthi 
12000..123FF; Cuneiform 
12400..1247F; Cuneiform Numbers and Punctuation 
1D000..1D0FF; Byzantine Musical Symbols 
1D100..1D1FF; Musical Symbols 
1D200..1D24F; Ancient Greek Musical Notation 
1D300..1D35F; Tai Xuan Jing Symbols 
1D360..1D37F; Counting Rod Numerals 
1D400..1D7FF; Mathematical Alphanumeric Symbols 
1F000..1F02F; Mahjong Tiles 
1F030..1F09F; Domino Tiles 
20000..2A6DF; CJK Unified Ideographs Extension B 
2F800..2FA1F; CJK Compatibility Ideographs Supplement 
E0000..E007F; Tags 
E0100..E01EF; Variation Selectors Supplement 
F0000..FFFFF; Supplementary Private Use Area-A 
100000..10FFFF; Supplementary Private Use Area-B 

# EOF 
''') 

Answer 2

unicodedata.name (chr)