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An implementation of the Unicode algorithm for breaking code point sequences into extended grapheme clusters as specified in UAX #29

Project description


An implementation of the Unicode algorithm for breaking strings of text (i.e., code point sequences) into extended grapheme clusters (“user-perceived characters”) as specified in UAX #29, “Unicode Text Segmentation”. This package supports version 15.0 of the Unicode standard (released on September 13, 2022). It has been thoroughly tested against the Unicode test file.


The easiest method to install is using pip:

pip install pyuegc

UCD version

To get the version of the Unicode character database currently used:

>>> from pyuegc import UCD_VERSION

Example usage

from pyuegc import EGC

for s in ["e\u0301le\u0300ve", "Z̷̳̎a̸̛ͅl̷̻̇g̵͉̉o̸̰͒", "기운찰만하다"]:
    egc = EGC(s)
    print(f"{len(s):>2}, {len(egc)}: {egc}")

# Output
#  7, 5: ['é', 'l', 'è', 'v', 'e']
# 20, 5: ['Z̷̳̎', 'a̸̛ͅ', 'l̷̻̇', 'g̵͉̉', 'o̸̰͒']
# 15, 6: ['기', '운', '찰', '만', '하', '다']

s = "ai\u0302ne\u0301e"  # aînée

# Output
# éen̂ia -> wrong (diacritics are messed up)
# eénîa -> right (regardless of the Unicode normalization form)

Related resources

This implementation is based on the following resources:


The code is available under the MIT license.

Usage of Unicode data files is governed by the UNICODE TERMS OF USE, a copy of which is included as UNICODE-LICENSE.

Project details

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pyuegc-15.0.0.tar.gz (66.8 kB view hashes)

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