integer_dictionary_fixed_points.py

units = ['zero', 'one', 'two', 'three', 'four', 'five', 'six', 'seven',
    'eight', 'nine', 'ten', 'eleven', 'twelve', 'thirteen', 'fourteen',
    'fifteen', 'sixteen', 'seventeen', 'eighteen', 'nineteen']
tens = ['zero', 'ten', 'twenty', 'thirty', 'forty', 'fifty', 'sixty',
    'seventy', 'eighty', 'ninety']
powers = ['zero', 'thousand', 'million', 'billion', 'trillion',
    'quadrillion', 'quintillion', 'sextillion', 'septillion', 'octillion',
    'nonillion', 'decillion']
hundred = 'hundred'
minus = 'minus'
comma = ','
and_ = ' and'
space = ' '
hyphen = '-'
empty = ''

def small_integer_name(n, use_and=False):
    s = empty
    if n >= 100:
        q, n = divmod(n, 100)
        s = units[q] + space + hundred + (
            (and_ if use_and else empty) + space if n > 0 else empty)
    if n >= 20:
        q, n = divmod(n, 10)
        s += tens[q] + (hyphen if n > 0 else empty)
    return (s + units[n] if n > 0 else s)

def integer_name(n, use_comma=False, use_and=False, power=0):
    if n < 0:
        return minus + space + integer_name(-n, use_comma, use_and)
    elif n == 0:
        return units[0]
    s = empty
    if n >= 1000:
        q, n = divmod(n, 1000)
        s = integer_name(q, use_comma, use_and, power + 1) + (
            (comma if use_comma else empty) + space if n > 0 else empty)
    return (s + small_integer_name(n, use_and) +
            (space + powers[power] if power > 0 else empty) if n > 0 else s)

def fixed(n):
    return [k for j, (name, k) in enumerate(sorted(
        ((integer_name(k), k) for k in range(1, n + 1))), start=1) if k == j]

for n in range(1, 10001):
    print(n, fixed(n))