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

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.