FIRST_TEN = ["one", "two", "three", "four", "five", "six", "seven",
"eight", "nine"]
SECOND_TEN = ["ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen",
"sixteen", "seventeen", "eighteen", "nineteen"]
OTHER_TENS = ["twenty", "thirty", "forty", "fifty", "sixty", "seventy",
"eighty", "ninety"]
HUNDRED = "hundred"
def checkio(number):
second_tens = range(10, 20)
result = ''
hundred, remain = number // 100, number % 100
if hundred: result += FIRST_TEN[hundred - 1] + ' ' + HUNDRED + ' '
if remain in second_tens:
result += SECOND_TEN[remain - 10]
else:
ten, one = remain // 10, remain % 10
if ten: result += OTHER_TENS[ten - 2] + ' '
if one: result += FIRST_TEN[one - 1]
return result.strip()
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
assert checkio(4) == 'four', "1st example"
assert checkio(133) == 'one hundred thirty three', "2nd example"
assert checkio(12) == 'twelve', "3rd example"
assert checkio(101) == 'one hundred one', "4th example"
assert checkio(212) == 'two hundred twelve', "5th example"
assert checkio(40) == 'forty', "6th example"
assert not checkio(212).endswith(' '), "Don't forget strip whitespaces at the end of string"
https://www.checkio.org/mission/speechmodule/