A pair of tuples clear solution for Reverse Roman Numerals by quarkov - python coding challenges

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A pair of tuples solution in Clear category for Reverse Roman Numerals by quarkov

def reverse_roman(text):
    
    roman = ('M', 'D', 'C', 'L', 'X', 'V', 'I', '')
    arab = (1000, 500, 100, 50, 10, 5, 1)
    result = 0
    
    for i in range(len(text)-1):
        now = roman.index(text[i])
        following = roman.index(text[i+1])
        if now > following:
            result -= arab[now]
        else:
            result += arab[now]
    
    result += arab[roman.index(text[-1])]
    return result

May 18, 2018

Comments:

JohanL on Nov. 30, 2018, 9:25 p.m.
<p>Consider using a Python dict rather than the two tuples for the roman and arab numbers. That is a more appropriate data structure for the task.</p>

quarkov on Nov. 30, 2018, 9:48 p.m.
<p>You're right. I'd rather use a dict than tuples. Half year ago it wasn't so obvious.</p>

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