Day 5 : Roman Numbers to Decimals in Python

 

#!/usr/bin/env python

# coding: utf-8

# # Roman Numbers to Decimals in Python

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tallies = {'I': 1,'V': 5,'X': 10,'L': 50,

           'C': 100,'D': 500,'M': 1000}

def RomanNumeralToDecimal(romanNumeral):

    sum = 0

    for i in range(len(romanNumeral) - 1):

        left = romanNumeral[i]

        right = romanNumeral[i + 1]

        if tallies[left] < tallies[right]:

            sum -= tallies[left]

        else:

            sum += tallies[left]

    sum += tallies[romanNumeral[-1]]

    return sum 

roman=input("Enter Roman Numbers :")

RomanNumeralToDecimal(roman)

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