Convert amount to word in Python In Indian Format

Question

How to convert amount to word in Indian?

I was using num2words library but its is presenting wrong set of words while presenting \'lakhs\' and \'crores\'.

For ex

Answer 1

you can split the decimal and fractional part can call num2word function twice on number and other on fractional part

import math
def num2words(num):
    under_20 = ['Zero','One','Two','Three','Four','Five','Six','Seven','Eight','Nine','Ten','Eleven','Twelve','Thirteen','Fourteen','Fifteen','Sixteen','Seventeen','Eighteen','Nineteen']
    tens = ['Twenty','Thirty','Forty','Fifty','Sixty','Seventy','Eighty','Ninety']
    above_100 = {100: 'Hundred',1000:'Thousand', 100000:'Lakhs', 10000000:'Crores'}

    if num < 20:
         return under_20[(int)(num)]

    if num < 100:
        return tens[(int)(num/10)-2] + ('' if num%10==0 else ' ' + under_20[(int)(num%10)])

    # find the appropriate pivot - 'Million' in 3,603,550, or 'Thousand' in 603,550
    pivot = max([key for key in above_100.keys() if key <= num])

    return num2words((int)(num/pivot)) + ' ' + above_100[pivot] + ('' if num%pivot==0 else ' ' + num2words(num%pivot))

num="5.12"
print(num2words(int(num.split(".")[0])))
print(num2words(int(num.split(".")[1])))

https://ide.geeksforgeeks.org/J7zsZyIT6m

Answer 2

I guess you could just cast it on the first line if you're not handling decimals. You can also use // to do integer division.

import decimal    

def num2words(num):
    num = decimal.Decimal(num)
    decimal_part = num - int(num)
    num = int(num)

    if decimal_part:
        return num2words(num) + " point " + (" ".join(num2words(i) for i in str(decimal_part)[2:]))

    under_20 = ['Zero', 'One', 'Two', 'Three', 'Four', 'Five', 'Six', 'Seven', 'Eight', 'Nine', 'Ten', 'Eleven', 'Twelve', 'Thirteen', 'Fourteen', 'Fifteen', 'Sixteen', 'Seventeen', 'Eighteen', 'Nineteen']
    tens = ['Twenty', 'Thirty', 'Forty', 'Fifty', 'Sixty', 'Seventy', 'Eighty', 'Ninety']
    above_100 = {100: 'Hundred', 1000: 'Thousand', 100000: 'Lakhs', 10000000: 'Crores'}

    if num < 20:
        return under_20[num]

    if num < 100:
        return tens[num // 10 - 2] + ('' if num % 10 == 0 else ' ' + under_20[num % 10])

    # find the appropriate pivot - 'Million' in 3,603,550, or 'Thousand' in 603,550
    pivot = max([key for key in above_100.keys() if key <= num])

    return num2words(num // pivot) + ' ' + above_100[pivot] + ('' if num % pivot==0 else ' ' + num2words(num % pivot))


print(num2words(decimal.Decimal("650958.32")))
# Six Lakhs Fifty Thousand Nine Hundred Fifty Eight point Three Two