numbers_as_words_999

### Mapping of numbers to words for 1-999 for writing on small cheques ###

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

ten_to_ninety = {
               '00': '', '10': 'ten', '11': 'eleven', '12': 'twelve', 
               '13': 'thirteen', '14': 'fourteen', '15': 'fifteen', 
               '16': 'sixteen',  '17': 'seventeen', '18': 'eighteen', 
               '19': 'nineteen', '20': 'twenty', '30': 'thirty', '40': 'fourty', 
               '50': 'fifty',    '60': 'sixty', '70': 'seventy', '80': 'eighty', 
               '90': 'ninety'}

def determine_cheque_wording(integer):
    full_word = ''
    integer = str(integer)
    
    if len(integer) == 3:
        full_word += one_to_nine[integer[0]]
        full_word += ' hundred '
        integer = integer[1:]
        
    if len(integer) == 2:
        if integer not in ten_to_ninety:
            int_A = integer[0] + '0'
            int_B = integer[1]
            full_word += ten_to_ninety[int_A]
            full_word += ' '
            full_word += one_to_nine[int_B]
            
        elif integer in ten_to_ninety:
            full_word += ten_to_ninety[integer]
            
    return full_word + ' money units'