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PersianUtils

A wonderful package to preprocess your Persian text for Search, Standardizing & NLP processes.

Why PersianUtils?

Persian has a lot of duplicate characters with Arabic but with different Unicode code points. This may lead to different writings of a word, with almost exactly the same appearance. In addition to that, contextual forms of a character may also be used in text, which doesn't change the word shape but makes the same trouble mentioned above. Unfortunately, a lot of non-standard Persian keyboards don't obey these rules, which makes the problem more severe. This package helps to make your Persian text a standard one, with original Persian characters.

Installation

To install PersianUtils, you can use pip:

pip install persianutils

Usage

There are two functions implemented for standardizing Persian text named "standardize" and "standardize4Word2vec".

standardize()

This function does the following:

  1. Replace Arabic characters with their Persian equivalent. Like from persianutils.ArabicAlphabet import ALEF_MAKSURA to from persianutils.PersianAlphabet import YE
  2. Remove Tanveens like ـٍ , ـَ , & etc.
  3. Replace contextual forms of a character to its original form. Like "ـتـ‎" to "ت".
  4. Replace western and eastern numerals to their Persian equivalent. 2 to ۲

Example:

import persianutils as pu
raw_text = "سلامٌ علیکم!"
processed_text = pu.standardize(raw_text)
print(processed_text)

That would result in:

سلام علیکم!

standardize4Word2vec()

This function has these features:

  1. Same as the standardize() #1
  2. Same as the standardize() #2
  3. Same as the standardize() #3
  4. Replace all numerals (Eastern, Western and Persian) to their Persian writings. 2 to دو
  5. Replaces all punctuation marks with single space. Punctuations are: [!"#%\'()*+,-./:;<=>?@\[\]^_`{|}~’”“′‘\\\]؟؛«»،٪

Example:

import persianutils as pu
raw_text = "سلامٌ علیکم!"
processed_text = pu.standardize4Word2vec(raw_text)
print(processed_text)

This would result in:

سلام علیکم

Persian & Arabic Characters

There is also a list of Persian & Arabic characters, accessible from persianutils.PersianAlphabet:

from persianutils.PersianAlphabet import ALEF, BE, PE, TE

Or for Arabic:

from persianutils.ArabicAlphabet import ALEF_HAMZA_ABOVE_FINAL, HAMZA_ABOVE_ALEF

Contributing

We appreciate all contributions. If you're interested in contributing, please start by reading our Contributing Guide.