converts western digits to arabic equivalent UTF8

gistfile1.py

def translate_to_ar_numbers(num):
    """
    Translates western digits in string to their correspondings arabic equivalent
    All other characters stays the same
    Args:
        num: number or string with numbers where we need to replace digits
    Returns:
        unicode string with replaced to arabic digits
        for example: u'٢٢٠-٢٤٠'  -- for num="220-240"
    """
    # ttable was formed by following code:
    # intab = u"0123456789"
    # outtab = u"٠١٢٣٤٥٦٧٨٩"
    # ttable = dict((ord(from_char), to_char)\
    #               for from_char, to_char in zip(intab, outtab))
    #
    # and used here as generated dictionary
    # also it was formed without using built-in `make_trans` method
    # becouse `make_trans` doesn't work with unicode

    ttable = {48: u'٠', 49: u'١', 50: u'٢', 51: u'٣', 52: u'٤',
            53: u'٥', 54: u'٦', 55: u'٧', 56: u'٨', 57: u'٩'}
    return unicode(num).translate(ttable)