RosettaCodeData/Task/Roman-numerals-Decode/Python/roman-numerals-decode-2.py

15 lines
509 B
Python

roman_values = (('I',1), ('IV',4), ('V',5), ('IX',9),('X',10),('XL',40),('L',50),('XC',90),('C',100),
('CD', 400), ('D', 500), ('CM', 900), ('M',1000))
def roman_value(roman):
total=0
for symbol,value in reversed(roman_values):
while roman.startswith(symbol):
total += value
roman = roman[len(symbol):]
return total
if __name__=='__main__':
for value in "MCMXC", "MMVIII", "MDCLXVI":
print('%s = %i' % (value, roman_value(value)))