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

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First solution in Clear category for Roman Numerals by ClaireLucyJones

def checkio(data):
    
    romanString = ""
    
    numeralNames = ["M","D","C","L","X","V","I"]
    numeralValues = [1000, 500, 100, 50, 10, 5, 1]
    
    #Start by getting roman numerals without any replacements of e.g. IV for IIII
    for i in range(len(numeralNames)):
        while data >= numeralValues[i]:
            romanString = romanString + numeralNames[i]
            data = data-numeralValues[i]
            
    #Now make the substitutions to abridge the roman numerals
    
    #Replace DCCCC with CM
    romanString = romanString.replace("DCCCC","CM")
    
    #Replace CCCC with CD
    romanString = romanString.replace("CCCC","CD")
    
    #Replace LXXXX with XC
    romanString = romanString.replace("LXXXX","XC")
     
    #Replace XXXX with XL
    romanString = romanString.replace("XXXX","XL")
     
    #Replace VIIII with IX
    romanString = romanString.replace("VIIII","IX")
  
    #Replace IIII with IV
    romanString = romanString.replace("IIII","IV")
    
    return romanString

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'
    print('Done! Go Check!')

Dec. 20, 2019

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