# Pyhfst
[](https://doi.org/10.5281/zenodo.7791470)
Pyhfst is a pure Python implementation of HFST. The library makes it possible to use HFST optimized lookup FSTs without any C dependencies. Both weighted and unweighted FSTs are supported.
The library will run on all operting systems that support Python 3.
# Installation
pip install pyhfst
Pyhfst can run way faster if you have Cython installed. After installing Cython, you must reinstall Pyhfst
pip install cython
pip install --upgrade --force-reinstall pyhfst --no-cache-dir
# Usage
import pyhfst
input_stream = pyhfst.HfstInputStream("./analyser")
tr = input_stream.read()
print(tr.lookup("voi"))
>> [['voida+V+Act+Ind+Prs+Sg3', 0.0], ['voida+V+Act+Ind+Prs+ConNeg', 0.0], ['voida+V+Act+Ind+Prt+Sg3', 0.0], ['voida+V+Act+Imprt+Prs+ConNeg+Sg2', 0.0], ['voida+V+Act+Imprt+Sg2', 0.0], ['voi+N+Sg+Nom', 0.0], ['voi+Pcle', 0.0], ['voi+Interj', 0.0]]
# Citation
Please cite the library as follows:
Alnajjar, K., & Hämäläinen, M. (2023, December). PYHFST: A Pure Python Implementation of HFST. In Lightning Proceedings of NLP4DH and IWCLUL 2023 (pp. 32-35).
@article{pyhfst_2023,
title={PyHFST: A Pure Python Implementation of HFST},
author={Alnajjar, Khalid and H{\"a}m{\"a}l{\"a}inen, Mika},
booktitle={Lightning Proceedings of NLP4DH and IWCLUL 2023},
pages={32--35},
year={2023}
}
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"description": "# Pyhfst\n\n[](https://doi.org/10.5281/zenodo.7791470)\n\nPyhfst is a pure Python implementation of HFST. The library makes it possible to use HFST optimized lookup FSTs without any C dependencies. Both weighted and unweighted FSTs are supported.\n\nThe library will run on all operting systems that support Python 3.\n\n# Installation\n\n pip install pyhfst\n \nPyhfst can run way faster if you have Cython installed. After installing Cython, you must reinstall Pyhfst\n\n pip install cython\n pip install --upgrade --force-reinstall pyhfst --no-cache-dir\n\n# Usage\n\n import pyhfst\n \n input_stream = pyhfst.HfstInputStream(\"./analyser\")\n tr = input_stream.read()\n print(tr.lookup(\"voi\"))\n \n >> [['voida+V+Act+Ind+Prs+Sg3', 0.0], ['voida+V+Act+Ind+Prs+ConNeg', 0.0], ['voida+V+Act+Ind+Prt+Sg3', 0.0], ['voida+V+Act+Imprt+Prs+ConNeg+Sg2', 0.0], ['voida+V+Act+Imprt+Sg2', 0.0], ['voi+N+Sg+Nom', 0.0], ['voi+Pcle', 0.0], ['voi+Interj', 0.0]]\n\n# Citation\n\nPlease cite the library as follows:\n\nAlnajjar, K., & H\u00e4m\u00e4l\u00e4inen, M. (2023, December). PYHFST: A Pure Python Implementation of HFST. In Lightning Proceedings of NLP4DH and IWCLUL 2023 (pp. 32-35).\n\n @article{pyhfst_2023, \n title={PyHFST: A Pure Python Implementation of HFST},\n author={Alnajjar, Khalid and H{\\\"a}m{\\\"a}l{\\\"a}inen, Mika},\n booktitle={Lightning Proceedings of NLP4DH and IWCLUL 2023},\n pages={32--35},\n year={2023} \n }\n",
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