String.maketrans for English and Persian numbers

user_1573477 0
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I have a function like this:

persian_numbers = '۱۲۳۴۵۶۷۸۹۰'
english_numbers = '1234567890'
arabic_numbers  = '١٢٣٤٥٦٧٨٩٠'

english_trans   = string.maketrans(english_numbers, persian_numbers)
arabic_trans    = string.maketrans(arabic_numbers, persian_numbers)

text.translate(english_trans)
text.translate(arabic_trans)

I want it to translate all Arabic and English numbers to Persian. But Python says:

english_translate = string.maketrans(english_numbers, persian_numbers)
ValueError: maketrans arguments must have same length

I tried to encode strings with Unicode utf-8 but I always got some errors! Sometimes the problem is Arabic string instead! Do you know a better solution for this job?

EDIT:

It seems the problem is Unicode characters length in ASCII. An Arabic number like '۱' is two character -- that I find out with ord(). And the length problem starts from here :-(

python-unicode python-2.7 python
7 Answers

See unidecode library which converts all strings into UTF8. It is very useful in case of number input in different languages.

In Python 2:

>>> from unidecode import unidecode
>>> a = unidecode(u"۰۱۲۳۴۵۶۷۸۹")
>>> a
'0123456789'
>>> unidecode(a)
'0123456789'

In Python 3:

>>> from unidecode import unidecode
>>> a = unidecode("۰۱۲۳۴۵۶۷۸۹")
>>> a
'0123456789'
>>> unidecode(a)
'0123456789'
user_66283970

You can use persiantools package:

Examples:

>>> from persiantools import digits

>>> digits.en_to_fa("0987654321")
'۰۹۸۷۶۵۴۳۲۱'

>>> digits.ar_to_fa("٠٩٨٧٦٥٤٣٢١")   # or digits.ar_to_fa(u"٠٩٨٧٦٥٤٣٢١")
'۰۹۸۷۶۵۴۳۲۱'
user_8775410

unidecode converts all characters from Persian to English, If you want to change only numbers follow bellow:

In python3 you can use this code to convert any Persian|Arabic number to English number while keeping other characters unchanged:

intab='۱۲۳۴۵۶۷۸۹۰١٢٣٤٥٦٧٨٩٠'
outtab='12345678901234567890'
translation_table = str.maketrans(intab, outtab)
output_text = input_text.translate(translation_table)
user_93592590

With this you can easily do that:

def p2e(persiannumber):
    
    number={
        '0':'۰',
        '1':'۱',
        '2':'۲',
        '3':'۳',
        '4':'۴',
        '5':'۵',
        '6':'۶',
        '7':'۷',
        '8':'۸',
        '9':'۹',
   }

    for i,j in number.items():
        persiannumber=persiannumber.replace(j,i)
        
    return persiannumber

here is usage:

print(p2e('۳۱۹۶'))
#returns 3196
user_146598710 
def persian_number(persiannumber):
    
    number={
        '0':'۰',
        '1':'۱',
        '2':'۲',
        '3':'۳',
        '4':'۴',
        '5':'۵',
        '6':'۶',
        '7':'۷',
        '8':'۸',
        '9':'۹',
   }

    for i,j in number.items():
        persiannumber=time2str.replace(i,j)
        
    return time2str

persiannumber must be a string

user_82771970
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