Number conversion to textual representation

name_number.py

from json import load

class Number:
    NAME = 0
    TEN_POWER_NAME = 1

def get_number_name(value, number_filename, lang=None, form=None, ten_pow_system=None):
    num_names = []

    with open(number_filename, 'r', encoding='utf-8') as fp:
        all_number_names = load(fp)

    if not lang:
        lang = all_number_names['Default']

    if not form:
        form = all_number_names[lang]['Default']

    if not ten_pow_system:
        ten_pow_system = all_number_names[lang][form]['Ten Power Names']['Default']

    number_names = {int(k):v for k,v in all_number_names[lang][form]['Names'].items()}
    ten_power_names = {int(k):v for k,v in all_number_names[lang][form]['Ten Power Names'][ten_pow_system].items()}

    number_splits = get_number_splits(value, number_names.keys(), ten_power_names.keys())

    for split in number_splits:
        if split[1] == Number.NAME:
            num_names.append(number_names[split[0]])
        elif split[1] == Number.TEN_POWER_NAME:
            num_names.append(ten_power_names[split[0]])
        else:
            raise Exception()
    
    return num_names

def get_number_splits(value, number_name_keys, ten_powers_name_keys):
    num_splits = []
    if value == 0:
        num_splits.append((0, Number.NAME))
    else:
        num_pow_splits = {}
        for p in sorted(ten_powers_name_keys, reverse=True):
            d = pow(10, p)
            num_pow_splits[p] = value // d
            value = value % d

        for p in sorted(ten_powers_name_keys, reverse=True):
            if num_pow_splits[p] == 0:
                continue
            
            if p == 1:
                if num_pow_splits[p] == 1:
                    value = 10 + num_pow_splits[0] 
                    num_splits.append((value, Number.NAME))
                    break
                else:
                    value = num_pow_splits[p] * 10
                    num_splits.append((value, Number.NAME))
                    continue
            
            if num_pow_splits[p] in number_name_keys:
                num_splits.append((num_pow_splits[p], Number.NAME))
            else:
                num_splits += get_number_splits(num_pow_splits[p], number_name_keys, ten_powers_name_keys)

            if p > 1:
                num_splits.append((p, Number.TEN_POWER_NAME))

    return num_splits

num_names = get_number_name(1001059900, 'number_names.json')
print (' '.join(num_names))

number_names.json

{
    "Default": "EN",
    "EN": {
        "Default" : "Simple",
        "Simple" : {
            "Names" : {
                "0":"zero", "1": "one", "2": "two", "3": "three", "4":"four", "5":"five", 
                "6":"six", "7":"seven", "8":"eight", "9":"nine", "10":"ten",
                "11":"eleven", "12":"twelve", "13":"thirteen", "14":"fourteen", "15":"fifteen",
                "16":"sixteen", "17":"seventeen", "18":"eighteen", "19":"nineteen",
                "20": "twenty", "30": "thirty", "40": "fourty", "50": "fifty", "60": "sixty",
                "70": "seventy", "80": "eighty", "90": "ninety"
            },
            "Ten Power Names": {
                "Default": "Short System", 
                "Long system": {
                    "0": "one",
                    "1": "ten",
                    "2": "hundred",
                    "3": "thousand",
                    "6": "million",
                    "9": "milliard",
                    "12": "billion",
                    "18": "trillion",
                    "24": "quadrillion",
                    "30": "quintillion",
                    "36": "sextillion",
                    "42": "septillion",
                    "48": "octillion",
                    "54": "nonillion",
                    "60": "decillion",
                    "66": "undecillion",
                    "72": "duodecillion",
                    "78": "tredecillion",
                    "84": "quattuordecillion",
                    "90": "quindecillion",
                    "96": "sexdecillion",
                    "102": "septendecillion",
                    "108": "octodecillion",
                    "114": "novemdecillion",
                    "120": "vigintillion",
                    "600": "centillion"
                },
                "Short System": {
                    "0": "one",
                    "1": "ten",
                    "2": "hundred",
                    "3": "thousand",
                    "6": "million",
                    "9": "billion",
                    "12": "trillion",
                    "15": "quadrillion",
                    "18": "quintillion",
                    "21": "sextillion",
                    "24": "septillion",
                    "27": "octillion",
                    "30": "nonillion",
                    "33": "decillion",
                    "36": "undecillion",
                    "39": "duodecillion",
                    "42": "tredecillion",
                    "45": "quattuordecillion",
                    "48": "quindecillion",
                    "51": "sexdecillion",
                    "54": "septendecillion",
                    "57": "octodecillion",
                    "60": "novemdecillion",
                    "63": "vigintillion",
                    "303": "centillion"
                }
            }
        }
    }
}