from_roman

plasmapy.utils.roman.from_roman(s: str) → numbers.Integral

Convert a Roman numeral to an integer.

Parameters

s (str) – A Roman numeral.

Returns

result – The integer corresponding to the Roman numeral.

Return type

int

Raises

• TypeError – The argument is not a str.

• InvalidRomanNumeralError – The argument is not a valid Roman numeral.

See also

to_roman

Examples

>>> from_roman('V')
5
>>> from_roman('MMMMCCCLXVII')
4367