Convert an amount to Indian Notation in Python

Question

Problem: I need to convert an amount to Indian currency format

My code: I have the following Python implementation:

Answer 1

Too much work.

>>> import locale
>>> locale.setlocale(locale.LC_MONETARY, 'en_IN')
'en_IN'
>>> print(locale.currency(100.52, grouping=True))
₹ 100.52
>>> print(locale.currency(1000.108, grouping=True))
₹ 1,000.11
>>> print(locale.currency(1200000, grouping=True))
₹ 12,00,000.00

Answer 2

Here is the other way around:

import re
def in_for(value):
    value,b=str(value),''
    value=''.join(map(lambda va:va if re.match(r'[0-9,.]',va) else '',value))
    val=value
    if val.count(',')==0:
        v,c,a,cc,ii=val,0,[3,2,2],0,0
        val=val[:val.rfind('.')] if val.rfind('.')>=0  else val
        for i in val[::-1]:
            if c==ii and c!=0:
                ii+=a[cc%3]
                b=','+i+b
                cc+=1  
            else:
                b=i+b
            c+=1
        b=b[1:] if b[0]==',' else b
        val=b+v[value.rfind('.'):]  if value.rfind('.')>=0  else b
    else:
        val=str(val).strip('()').replace(' ','')
    v=val.rfind('.')
    if v>0:
        val=val[:v+3]
    return val.rstrip('0').rstrip('.') if '.' in val else val

print(in_for('1000000000000.5445'))

Output will be:

10,000,00,00,000.54 

(As mentioned in wikipedia indian number system Ex:67,89,000,00,00,000)

Answer 3

You can follow these steps. Install Babel python package from pip

pip install Babel

In your python script

from babel.numbers import format_currency
format_currency(5433422.8012, 'INR', locale='en_IN')

Output:

₹ 54,33,422.80

Answer 4

Couldn't make the other two solutions work for me, so I made something a little more low-tech:

def format_as_indian(input):
    input_list = list(str(input))
    if len(input_list) <= 1:
        formatted_input = input
    else:
        first_number = input_list.pop(0)
        last_number = input_list.pop()
        formatted_input = first_number + (
            (''.join(l + ',' * (n % 2 == 1) for n, l in enumerate(reversed(input_list)))[::-1] + last_number)
        )

        if len(input_list) % 2 == 0:
            formatted_input.lstrip(',')

    return formatted_input

This doesn't work with decimals. If you need that, I would suggest saving the decimal portion into another variable and adding it back in at the end.

Answer 5

def format_indian(t):
dic = {
    4:'Thousand',
    5:'Lakh',
    6:'Lakh',
    7:'Crore',
    8:'Crore',
    9:'Arab'
}
y = 10
len_of_number = len(str(t))
save = t
z=y
while(t!=0):
   t=int(t/y)
   z*=10

zeros = len(str(z)) - 3
if zeros>3:
    if zeros%2!=0:
        string = str(save)+": "+str(save/(z/100))[0:4]+" "+dic[zeros]
    else:   
        string = str(save)+": "+str(save/(z/1000))[0:4]+" "+dic[zeros]
    return string
return str(save)+": "+str(save)

This code will Convert Yout Numbers to Lakhs, Crores and arabs in most simplest way. Hope it helps.

for i in [1.234567899 * 10**x for x in range(9)]:
print(format_indian(int(i)))

Output:

1: 1
12: 12
123: 123
1234: 1234
12345: 12.3 Thousand
123456: 1.23 Lakh
1234567: 12.3 Lakh
12345678: 1.23 Crore
123456789: 12.3 Crore