17 lines
546 B
Python
17 lines
546 B
Python
values_map = [
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(1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1),
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( 'M', 'CM', 'D', 'CD', 'C', 'XC', 'L', 'XL', 'X', 'IX', 'V', 'IV', 'I')
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]
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def to_roman(arabic: int) -> str:
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""" Convert an integer to a Roman numeral. """
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if not 0 < arabic < 4000:
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raise ValueError('Argument must be between 1 and 3999')
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result = []
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for value, numeral in zip(*values_map):
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repeat = arabic // value
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result.append(numeral * repeat)
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arabic -= value * repeat
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return ''.join(result)
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