transfer numbers

gistfile1.txt

NUM = {
    '1': 'one',
    '2': 'two',
    '3': 'three',
    '4': 'four',
    '5': 'five',
    '6': 'six',
    '7': 'seven',
    '8': 'eight',
    '9': 'nine',
}


TENS = {
    '10': 'ten',
    '11': 'eleven',
    '12': 'twelve',
    '13': 'thirteen',
    '14': 'fourteen',
    '15': 'fifteen',
    '16': 'sixteen',
    '17': 'seventeen',
    '18': 'eighteen',
    '19': 'nineteen',
    '2': 'twenty',
    '3': 'thirty',
    '4': 'fourty',
    '5': 'fifty',
    '6': 'sixty',
    '7': 'seventy',
    '8': 'eighty',
    '9': 'ninety',
    '0': ''
}


def do_float(number):
    return " ".join([NUM[i] for i in number])


def get_prefix(i):
    if i == 1:
        return 'thousand'
    if i == 2:
        return 'million'
    if i == 3:
        return 'billion'


def do_int(number):
    number = list(number)
    l = len(number)
    g = l / 3
    if l / 3.0 > g:
        g += 1
    numbers = []
    for i in range(g):
        left = l - (i + 1) * 3
        if left < 0:
            left = 0
        right = l - i * 3
        if i > 0:
            numbers.insert(0, get_prefix(i))
        numbers.insert(0, do_hun(number[left:right]))
    return " ".join(numbers)


def do_ten(number):
    if number[0] == '1':
        number[0] = TENS["%s%s" % (number[0], number[1])]
        del(number[1])
    else:
        if number[0] == '0':
            del(number[0])
            number[0] = NUM[number[0]]
        else:
            number[0] = TENS[number[0]]
            if number[1] == '0':
                del(number[1])
            else:
                number[1] = NUM[number[1]]
    return " ".join(number)


def do_hun(number):
    if len(number) == 1:
        number[0] = NUM[number[0]]
        return " ".join(number)
    elif len(number) == 2:
        return do_ten(number)
    else:
        if number[0] == '0':
            del(number[0])
            return do_ten(number)
        else:
            number[0] = '%s hundred and' % NUM[number[0]]
            number[1] = do_ten(number[1:])
            del(number[2])
    return " ".join(number)


def transfer(number):
    print number
    numbers = number.split('.')
    if len(numbers) > 1:
        return " point ".join([do_int(numbers[0]), do_float(numbers[1])])
    return do_int(numbers[0])


def main():
    print transfer('1')
    print transfer('11')
    print transfer('21')
    print transfer('111')
    print transfer('121')
    print transfer('206')
    print transfer('101')
    print transfer('1111')
    print transfer('1234567890')
    print transfer("30206064.365")


if __name__ == '__main__':
    main()