Source code for abydos.tokenizer._character

# Copyright 2018-2020 by Christopher C. Little.
# This file is part of Abydos.
# Abydos is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# Abydos is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# GNU General Public License for more details.
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# along with Abydos. If not, see <>.


Character tokenizer

from ._tokenizer import _Tokenizer

__all__ = ['CharacterTokenizer']

[docs]class CharacterTokenizer(_Tokenizer): """A character tokenizer. .. versionadded:: 0.4.0 """ def __init__(self, scaler=None): """Initialize tokenizer. Parameters ---------- scaler : None, str, or function A scaling function for the Counter: - None : no scaling - 'set' : All non-zero values are set to 1. - a callable function : The function is applied to each value in the Counter. Some useful functions include math.exp, math.log1p, math.sqrt, and indexes into interesting integer sequences such as the Fibonacci sequence. .. versionadded:: 0.4.0 """ super(CharacterTokenizer, self).__init__(scaler)
[docs] def tokenize(self, string): """Tokenize the term and store it. The tokenized term is stored as an ordered list and as a Counter object. Parameters ---------- string : str The string to tokenize Examples -------- >>> CharacterTokenizer().tokenize('AACTAGAAC') CharacterTokenizer({'A': 5, 'C': 2, 'T': 1, 'G': 1}) .. versionadded:: 0.4.0 """ self._string = string self._ordered_tokens = list(string) super(CharacterTokenizer, self).tokenize() return self
if __name__ == '__main__': import doctest doctest.testmod()