First clear solution for Roman Numerals by grigoriytretyakov - python coding challenges

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First solution in Clear category for Roman Numerals by grigoriytretyakov

def checkio(data):                                                         
    thousands = ('', 'M', 'MM', 'MMM')                                     
    hundreds = ('', 'C', 'CC', 'CCC', 'CD', 'D', 'DC', 'DCC', 'DCCC', 'CM')
    tens = ('', 'X', 'XX', 'XXX', 'XL', 'L', 'LX', 'LXX', 'LXXX', 'XC')    
    ones = ('', 'I', 'II', 'III', 'IV', 'V', 'VI', 'VII', 'VIII', 'IX')    
                                                                           
    return ''.join((                                                       
        thousands[data // 1000],                                           
        hundreds[data // 100 % 10],                                        
        tens[data // 10 % 10],                                             
        ones[data % 10]                                                    
    ))                                                                     


if __name__ == '__main__':
    #These "asserts" using only for self-checking and not necessary for auto-testing
    assert checkio(6) == 'VI', '6'
    assert checkio(76) == 'LXXVI', '76'
    assert checkio(499) == 'CDXCIX', '499'
    assert checkio(3888) == 'MMMDCCCLXXXVIII', '3888'

Feb. 12, 2015

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